NotebookLM Will Change How You Learn – Here’s Why!
By Tiago Forte
Summary
## Key takeaways - **AI-Generated Podcasts for Learning**: NotebookLM can create custom podcast conversations based on your uploaded sources, allowing for a more engaging and accessible way to learn and digest information, even allowing you to interrupt and join the conversation. [01:22], [07:23] - **Massive Context Window: 25 Million Words**: NotebookLM's expanded context window, now up to 25 million words, allows it to process and analyze vast amounts of information, enabling deeper insights and personalized learning experiences by remembering your entire history of notes and research. [13:37], [17:15] - **Multimodal Sources: Images and Slides**: NotebookLM now supports multimodal sources, including images within Google Slides, enabling it to understand and analyze complex visual information like charts, diagrams, and presentations, making it easier to extract key data. [20:17], [23:48] - **Source Grounding Prevents AI Hallucinations**: A key feature of NotebookLM is its 'source grounding,' which means AI responses are directly tied to provided sources, indicated by inline citations. This significantly reduces hallucinations and allows users to verify information by clicking citations that link directly to the relevant text. [26:07], [27:00] - **NotebookLM Plus for Collaboration**: The paid NotebookLM Plus version offers enhanced features like an even larger context window, higher usage limits, chat modes with different AI personalities, and crucially, the ability to collaborate by sharing entire notebooks with others, allowing them to interact with the custom AI model. [27:19], [29:14]
Topics Covered
- NotebookLM: The Ultimate Tool for Understanding
- Using AI for Researching Family Trips
- AI's Interactive Mode: Tailoring Itineraries with Kids
- AI Hallucinations: The Trust Paradox
- AI Teacher with Perfect Memory: A Life-Changing Phenomenon
Full Transcript
think about how often you encounter the
following scenario there's a task you're
trying to complete but in order to do
that simple task you have all this
background you have to have all these
documents you have to read slide
presentations to go over people you have
to talk to Concepts you have to
understand the problem is who in a crazy
busy workday has time to sit down and
spend hours reading
things hey everyone about a year ago I
released a YouTube video on a new
experimental AI platform from Google
called notebook LM but you know I
thought this is probably not going to go
anywhere it's just a beta just an
experiment but let me tell you I was
completely wrong let me show you the
five biggest new features that notebook
LM has come up with and no this video is
not sponsored now before I show my
screen I want to answer what I think is
a really fundamental question which is
what is notebook
lm4 especially how is it unique and
different from some of the other AI
tools out there like chat GPT well I was
reading one of the blog posts that the
notebook LM team had written and in that
post they called it a tool for
understanding and I think that's the
best simple description I've seen it's
the ultimate tool for understanding
things there's a lot to cover so buckle
up grab a cup of coffee and let's Dive
Right In first let's talk about audio
overviews imagine if you were setting
something or learning something or
reading something and you just happen to
come across a podcast in your podcast
app between two super engaging
knowledgeable hosts explaining that
thing to you well now you don't have to
be lucky you can generate exactly that
conversation on demand anytime you want
what you see here on my screen is the
main interface when you log in at
notebook lm. goole.com it's very simple
each one of these squares contains all
the material for a specific project so
the first thing you're usually going to
do is Click create new and add some
sources these are the sources that you
want it to know about that you want it
to site and draw from so the project I
have in mind is an upcoming trip to
Guatemala that my family and I are
planning to take this summer this is
exactly the kind of project that I would
love to spend lots of time on
researching the country their culture
their history all the itineraries the
destinations we could visit the
activities the cultural experiences but
if I'm really honest with myself it's
also the type of project that is likely
not to be prioritized I have a lot going
on over the next few months I'm writing
a book I have two young kids so it's the
kind of thing that I know I really could
use ai's help with so the first thing
I'm going to do is look for some sources
that I want to draw on and this can be
as simple as opening up Google and
typing best places to visit in Guatemala
and I'm going to scroll through here
these look like great sources these
three right here so I'm just going to
hold down command and click each one of
them which opens them up in tabs along
the top up here now I'm not going to
read them not going to dive into them
all I want them is to stay open right
there then let's try YouTube and here
I'm going to be a little more specific
I'm going to say underrated places to
visit in Guatemala so let's open this
one again I'm going to hold down command
and click I'll do that one and then I
even like that this one is specifically
about an underrated location so let's
add that one all right so this is a good
start I have three websites and three
YouTube videos which might not seem like
a lot but it kind of is it would take me
probably an hour or two hours to really
dive deep into those so what I'm going
to do instead of reading them myself is
just add them as sources in Notebook LM
let's open up the first website here I'm
going to do command L to highlight the
URL here and then command C to copy it
and then back in Notebook LM you can see
right down here I can add Google Drive
documents I can add links and I can add
pasted text so I'm going to go ahead and
click website and then command V to
paste and then insert no that I can
click on the source right here and this
little purple panel will open up called
The Source guide The Source guide is
just a one paragraph summary of The
Source let's go to our second website
command L to highlight the URL command C
back to notebook LM I'm going to click
this add source button right here at the
top left website paste it add that as
well all right so now I have two sources
I'm just going to take a minute here and
do the same with this
last website
and then it looks much the same with
YouTube videos you just click the video
command L copy the URL of the YouTube
video add Source this time click YouTube
paste it right
there I just remembered a friend who was
Guatemalan also sent me a country guide
a quite long extensive PDF kind of
highlighting and showcasing some of the
best places to visit so I'm going to go
ahead and add that as well to do that
I'll hit add source and this time click
choose file to add a file for my
computer and I can see it's in my
downloads folder right there there we go
you can see it right there and there's
one more thing I want to add which is in
my notes which is this suggested
itinerary that the friend who is the one
getting married who we're going to visit
actually suggested for us so they
suggested a 6 day 7 night itinerary
definitely want to take that into
account so I'm going to go ahead and do
command a to select all that text
command C to copy head back over to
notebook LM and this time I'm going to
hit add source and right over here where
it says copied text what that allows me
to do is to Simply paste whatever text I
want right into the little window here
hit insert and that is now a source as
well this is a good start you can see
here I have eight different sources I'm
working with and before I click this big
generate button here I'm going to
customize the conversation a little bit
so I'm going to say just give it some
context and details
and then I'll click generate this is
what you're going to see it says
generating conversation there's a little
circle here and this will take somewhere
between around 3 to 6 minutes so I
usually go get a cup of coffee or go to
the bathroom or just take a little
stretch break while this is generating
all right so we're fast forwarding here
a few minutes 3 or 4 minutes but you can
see here it has now generated a 21
minute 12 second podcast conversation
that I would love to share with you now
here it is okay so get this our listener
is heading to Guatemala summer of 2025
nice a week they say and they want the
authentic experience yeah did you know
that some of the world's most sought
after coffee beans come from the
volcanic slopes surrounding Antiga I did
I actually saw something about that
apparently Antiga has this like booming
coffee scene not just plantations but
like Artisan Roasters and cafes yeah I
think one of the Articles recommended
this place called artista de Cafe oh
nice saying it was like this hub for
local artists and coffee connoisseurs
I'll go ahead and pause that now but you
can see that this conversation is not
just perfectly realistic and
indistinguishable from a human
conversation but it's completely
customized based on the instructions
that I gave them but you know what you
can even customize this further and that
is through a beta feature called
interactive mode where believe it or not
you can actually click a button and join
the conversation in real time yourself
so I've just remembered a key detail
that I forgot to mention so let's go
ahead and enter interactive mode and
chime in on this conversation so I'll go
ahead and start playing the podcast
again okay so get this our listener is
heading to Guatemala summer of 2025 nice
a week they say so watch what happens
when I click this join button and
interrupt the conversation oh hey there
how can we help hey guys I appreciate
this but I forgot one key detail which
is that we're going to have two small
kids with us ages 2 and four could you
please give us a recommended itinerary
taking that into account oh wow okay
that's definitely a key detail yeah
traveling with a two and four-year-old
changes things okay so let's unpack this
and tailor our itinerary a bit yeah
we'll need to balance adventure with
kid-friendly options right we were about
to get into how to experience Guatemala
like a local and honestly that's totally
doable with kids it's going to mean
adjusting the pace a little exactly like
maybe fewer super long travel days and
more focus on activities that engage
young ones all right so I don't know if
you caught that but this is the most
remarkable demonstration of AI that I
think I've ever seen I think this is so
powerful for a few reasons one is
there's a lot of people out there who
don't learn best by reading reading is
actually really taxing and boring they
need to listen to it but there's another
reason which is think about the typical
chat interactions that people have with
AI in a chat format the onus the burden
is always on you to keep the
conversation moving forward you have to
think of a question you have to think of
a prompt you have to keep putting an
effort to make progress this is
completely different this is Two Hosts
who are very knowledgeable about the
topic and the sources having their own
conversation completely independently of
you it's more passive in many ways but
that's good very often especially in
your first encounter with something you
want this kind of superficial surface
level survey of the landscape that way
you even know what topics are relevant
what questions to ask I've been using
audio overviews exactly that way anytime
I want just a kind of General summary or
survey of a topic I go straight here and
generate a personalized podcast
conversation on that topic I'm going to
go ahead and close this window here on
the side and one last thing I want to
show you is that you're not limited to
the audio overview if the hosts talk
about something you find interesting and
want to know more about well you have
all the sources already loaded up here
you can go right here at the bottom to
the little chat window and ask anything
you want for example I'm going to say
why is antia so underrated I'm kind of
afraid maybe it's dangerous maybe it's
not super safe so I I want to know why
do tourists not tend to go there and
there you go you can see a much more
in-depth bullet point by bullet point
summary of what makes it so underrated
and each one of those statements is
cited and if you click on one of those
little citations it takes you exactly to
that part of the source that it's
referring to and then last thing you can
also create structured documents so
let's say that you are studying
Guatemala and you actually really decide
you want to go deeper if you click this
button right here the study guide it
will generate an entire document with a
quiz answer key essay questions glossery
of key terms looks like a lot of the
specific destinations it's mentioning so
you're not limited to a surface level
conversation you can go as deep and as
detailed as you want now there's one
more example of what you can do with
with audio overviews that I want to show
you so let's head back out to the main
interface I'm going to create a new
notebook and the example I showed you
with my Guatemala trip was an example
that uses external sources sources that
you can find on the internet but you can
also use your own internal thoughts
feelings ideas journal entries and
that's what I want to show you next so
I'm going to go ahead and click on
Google Docs and then right down here I
have my endof year journaling at the end
of every year I do something called an
annual review or a year-end review where
I think back to the past year and just
reflect and journal on different
Milestones that happened Precious
Memories goals that I achieved lessons I
learned and all that journaling is
contained in this document right here
which I'm going to insert as a source
called thiago's 2024 year-end journaling
you can see that there's a summary here
of what this document is about and I'm
just going to add that single source and
go ahead and generate an audio overview
I'll fast forward a few minutes here and
now we can listen hey everyone and
welcome to uh another Deep dive with us
yes welcome today we're going to be uh
looking at Thiago Forte's 2024 year in
review which is something that uh he
recommends people do and uh he practices
what he preaches so yes does and it's
also kind of interesting that he
actually expresses some anxiety about
doing the review oh really even though
this is kind of his area of expertise I
know I was going to say this is kind of
his thing yeah is to like reflect and
review and he even has anxiety about it
he does he's worried about coming across
as performative or you know not digging
deep enough all right I'll spare you the
rest of that what I found so fascinating
about this is several things first of
all it gives me such an interesting kind
of Outsider perspective on my life you
know I can go back and read my own
journal entries but hearing what feels
like two other humans talking about it
in depth they're fascinated by the
insights I've come up with they're
impressed at some of the the goals that
I've accomplished they're empathetic and
they sympathize with some of the hard
painful lessons that I had it really
helps me just get out of my own
perspective uh see my life from this
more objective point of view which
honestly gives me so much more
appreciation so much more gratitude
helps me kind of be more objective about
even the life and the year that I had uh
which is just kind of a really powerful
tool for personal growth it's something
that I'm definitely going to make part
of my my journaling practices going
forward next up we have feature number
two which is an expanded context window
I know this might seem like a boring
backend technical feature you're like
why do I care about this I don't even
know what a context window is but this
is in some ways actually the most
important this single seemingly backend
technical feature completely radically
changes what is possible with AI imagine
if you had a guidance counselor who
could recommend the perfect Next Step in
your learning based not just on guessing
or a few small details about you but on
the entire history of everything you've
ever read and consumed notbook LM uses
Google's Gemini 2.0 flash aai model
which can now take in get this up to 50
sources each one of which can have up to
500,000 words just to do the math for
you that's up to 25 million words of
context that is so much higher than any
other AI tool out there and basically
means you're never going to hit the
limit almost any conceivable use case
can fit within 25 million words but let
me take a step back and explain what is
a context window and why does it matter
think of AI as having two kinds of
memory just like humans there's
long-term memory and there's short-term
memory an ai's long-term memory is
basically what's called its training
data all the data that went into its
creation and basically these days all
the major AI models have the same same
training data more or less which is the
entire internet they're all trained on
the internet which means paradoxically
that there's no real advantage in its
long-term memory in its training data
because it's the same across all the AI
models a short-term memory is the data
that it's working with right now like
what is the conversation it's having
right now the problem it's trying to
solve right now the person you it's
talking with right now most of the
advantage of working with AI now comes
from that short-term memory the
specifics of the problem you're trying
to solve the history of the product or
your company your specific skills and
resources you have access to things
you've tried and whether they worked or
not that kind of data which we call your
context is what you supply to the AI for
it to know something about you the
context window this term I keep using is
simply the limits of how much context
you can give the AI until recently it
was maybe a few thousand words or 10,000
words or maybe 30,000 words now with
Gemini 2.0 flash that has radically
expanded to 25 million words let me give
you some examples imagine you work in
product development and you could load
up an entire folder full of hundreds or
even thousands of in-depth customer
interviews and then ask notebook LM to
evaluate and analyze an idea you have
for a new product based on all those
past interactions imagine if you work in
a nonprofit and you can upload an
archive of every every single Grant
you've ever won plus a directory of
hundreds of currently open grants and
then ask it to tell you which Grant
proposals you're most likely to win and
then to actually write the proposal
drawing on the mission statement of your
organization imagine if you're having a
mysterious medical problem and you can
load up your entire medical history and
ask it to identify any recurring
patterns even across different
Specialties imagine if you could upload
the entirety of your personal notes from
years of reading and highlighting and
note taking and every time you encounter
a new idea such as in a book you could
ask the AI if there are any existing
connections to that idea in your notes
you know what let's make this concrete
let's actually take that last example of
loading up all your notes and do it in
real time so I'm going to go ahead and
create a new notebook and I actually use
a service called readwise which
automatically syncs all of the
highlights that I make from any ebook
that I read read or uh any online
article or other online content that I
save in a centralized Place rewise
actually has a partnership with notebook
LM that allows you to export the
entirety of all those notes and
highlights to Google Docs in a format
that's perfectly designed to be loaded
up into notebook LM you can check out my
first video for more details on how that
works what this allows me to do is to
open up my Google Drive here and I'll
find five Google Docs worth of all those
highlights so what I'm going to to do is
Select each of these by holding down
command as I click them I'll click
insert and there we go took about 2
minutes but you can see in this one
little paragraph right here that it's
essentially summarized a broad swath of
my learning my research my interests
across over a decade of my life and this
is where it really gets fun at this
stage because I can ask at some really
deep penetrating questions about the
history of my my personal growth my
learning my educ a in my career for
example I can say please summarize a
list of my most common recurring
interests based on these
notes there we go we can see not taking
in Knowledge Management types of notes
the value of externalizing thoughts
habits and routines the importance of
making connections all huge areas of
interest but then let me go beyond what
is found in this message here and say
what are some other ideas topics and
areas of interest that are likely to
resonate With Me based on this
list so it's essentially like a teacher
suggesting other things that I might
want to learn about now let's go beyond
that and say please create a study guide
and reading list to help me dive deeper
into these topics it's broken up into
chapters and then each chapter has key
questions activities and readings
including including my own book I love
this using AI as a tool here's a bigger
reading list and additional
recommendations each one of these
recommendations is drawing on so much
existing knowledge about me they're not
random or one siiz fits-all this is a
perfectly personalized learning
curriculum that has been generated based
on years of my notetaking do you get why
an expanded context window is so
critical the possibility that this is
opening up is a completely different way
of interacting with AI it's not about
designing these crazy extensive prompts
it's not about meticulously organizing
your sources it's really just about
pointing the AI at a massive repository
of information and letting it do the
work let's talk about new feature number
three which is multimodal sources
multimodal is just a fancy word that
means many different kinds of formats
notebook LM can now take basically any
kind of format that you want to throw at
it there's URLs from web pages and
YouTube videos like we saw you can put
in PDFs you can put in text Google Docs
audio files you could take a little
voice memo note while walking around
your neighborhood and then upload that
but the most exciting and newest one is
images specifically images within Google
Slides think about how often you
encounter information in modern work
especially in the form of slides
presentations that someone is giving to
you or you're giving to someone else
sales calls technical specifications
slides are a very common format these
days and you can now work with those
directly in Notebook LM let me show you
what that looks like as always I'll
start by creating a new notebook and
then I'm going to click right here where
it says Google Slides go over to recent
and let's use as an example a recent
presentation that was sent to us by our
insurance agent proposing a couple new
health benefits packages for our
employees so this is the kind of
information that is important has high
stakes it matters that I pay attention
to it but it's also just so incredibly
mindly boring that I want to spend as
little time loading up this information
into my brain as possible so I've loaded
it up as a source as you can see here
you can see there's a little summary
which is that uh they're proposing two
new health benefits packages okay so my
first question is please compare and
contrast the two proposed packages so
you can see here there's a summary uh
comparing their deductibles their office
visit costs monthly and annual cost but
you know what this is a little bit too
extensive so I'm going to say please
summarize more succinctly what is the
core difference between these plans and
there we go the core difference is in
the cost of office visits and the
overall monthly cost with A1 the first
option being more expensive so as the
founder and CEO of this business that is
really the bottom line for me I don't
really need to know all the fine grain
details that is for our insurance agent
that's for the operations person on my
team the decision of which plan to go
with Falls with me and what matters at
the end of the day is the cost so I'm
actually going to ask it to perform an
analysis of what the cost difference
would be between these two plans for six
employees over the the course of a year
and there we go its analysis is that the
first A1 plan would cost 15,000 almost
$166,000 more per year so this is the
part that is actually most important to
me I'm actually going to highlight this
part and say save to note which is what
I do anytime the AI gives me something
that is actually valuable longterm that
I want to keep track of I just click
that button and it saves it over here in
this little uh right hand bottom corner
but the purpose of this demonstration
was to show you how it works with images
and slides so what I'm going to do is
let's say I would like to know the
source of this I want to check that it's
accurate myself I can go ahead and click
this little one here which is the
citation and it takes me directly to the
table where it shows that price
difference so notice when we look at the
slides here how complex this information
is it's multicolored it's in columns
rows it is not an easy thing to absorb
but diagrams charts IM images
photographs all these kinds of things if
they're embedded in slides can now be
understood by notebook LM and that's the
multimodal capability now let's talk
about feature number four which is a
redesigned interface if we head back to
our Guatemala notebook as an example the
whole interface for a given notebook is
divided into these three columns which
they call panels on the left is the
sources panel this is simply what
sources the AI is working with and
drawing from and you can expand that or
once you've sort of settled on the
sources and you're not going to do a lot
of changes here you can just collapse
that so you have more space for the
other ones the second panel which is
this middle part is the chat panel which
is where you actually speak with and
interact with the AI it's nice to make
this large because sometimes it gives
quite extensive answers that you want to
be able to see in this wider format for
example if I click this question what
cultural and historical significance
shapes Guatemala's top destinations you
can see it's probably around 500 Words
so if I like this answer and I decide I
want to keep it for later I can just
scroll down click the save to note
button and it saves just this one answer
which I've decided is valuable over here
on the bottom right this is called the
studio panel this one on the right and
it does a number of things this is where
you create and interact with audio
overviews it's where you have these
pre-made options such as creating a
study guide or a briefing document or a
frequently asked questions or timeline
for example if I click the FAQ button
it's now generated in a question and
answer format a summary of the different
sources that we're working with so I can
go ahead and close that but I'd say the
most important part is these notes when
you have a conversation with an AI
unless you take an action it kind of all
just disappears over time so you want to
be sure if you get a good answer to just
click that little save to note button
and over time you'll have here at the
bottom right almost you can think of it
like the final output the gems the
Evergreen insights that you want to take
away from this conversation are all
going to be saved here in the notes
section so that's the overall interface
but for me by far the most important new
addition over the last year has been
these little numbers see those there's
kind of a big problem with most modern
AI tools which is they hallucinate they
make things up which is kind of a
paradox because the more you depend on
AI to execute important tasks and even
make decisions the less you can trust it
because you never know if it's
hallucinating one thing I really
appreciate about the notebook LM team's
philosophy is they had from the very
earliest prototypes this idea of source
grounding what source grounding means is
that especially for information that is
in the context window that short-term
memory that we talked about it's
basically not going to hallucinate or
very very rarely you can check that it's
not hallucinating you can essentially
double check the ai's answers by simply
clicking one of these little numbers
which are the source citations I'm going
to go ahead and click on the 16 and it
not only opens up the original source
which is this YouTube video it takes me
to and highlights exactly the point that
that came from this is a huge deal you
guys you have to be able to trust what
the AI is telling you and this new
interface with inline citations is a
huge step forward for that and finally
feature number five let's talk about it
for the very first time there is now a
paid upgraded version of notebook LM the
basic version which is most of what
you've seen here is free and I would
expect it to remain free most of
Google's core tools are free but if you
work on a team or a company or
organization that wants to use notebook
LM it may be worth checking out there's
actually three separate ways to get
notebook LM Plus either through Google
workspace which you may have as part of
your company through Google cloud or
through Google one which can be
purchased individually the pricing
depends on exactly how you purchase it
but it seems to be something around $20
per month and there's four main things
that you get as part of notebook LM plus
the first one is an even bigger context
window so instead of 25 million words
you can have and this is just kind of
mindboggling up
to 15 million words the only use case I
can think of for that is if you're at a
company and you want to put in like all
of the company's data into a prompt the
second thing you get is five times
higher usage limits so that means you
can create five times more audio
overviews and have five times more
notebooks again mostly useful if you're
working with a lot of other people on a
team or in a company the third plus
feature is what are called chat modes if
you click on this button right here you
can give notebook LM certain almost like
personalities that it takes on in your
interactions so let's say in this
conversation you want it to take on the
role of an analyst it will become more
critical and more analytical or it could
be more of a guide almost like a teacher
or you can Define your own personality
so let's say you wanted to act as a
marketing expert or a life coach or a
research assistant you can actually
Define that and describe it right here
in this box and then you can also
customize it to make its responses
longer or shorter but the fourth and I
think by far the most important plus
feature is the ability to collaborate
within notebook LM think about it have
you ever had a particularly interesting
interaction with an AI you're getting
some real insights and some real New
Perspectives and then you think I want
to share this there's often not an easy
way to do that except copying and
pasting things and sending them to
people via email or slack or whatever
but then you lose all the interaction
it's just a static piece of text with
plus you could actually get this entire
notebook click this share button right
here customize the permissions at a
welcome note if you'd like and then
choose whether you want to share the
full notebook with all the sources that
you've added with all the customizations
with all the notes you saved or you can
make it chat only you could give the
people on your team or the people who
work for you your employees or or even
external collaborators the ability to
talk with and go back and forth with the
essentially custom AI model that you've
created without you having to copy and
paste stuff once you've decided on the
settings all you have to do is click
this link right here to copy the link
and send it to them and they'll have
access via their own free Google
notebook LM account overall I would say
plus really makes the most sense for
people who have adopted notebook LM
pretty seriously and are using it with
others as part of companies like I
said okay I've shared a lot with you so
let's take a step back and kind of
summarize the big picture here I think
the big shift that's happening right now
with notebook LM with this much bigger
context window is just like a great
teacher it's gaining a really fantastic
shortterm memory think about how
important it is that a great teacher can
follow the thread of the topic that it's
teaching you a great teacher can
reference previous conversations what
you just said a few minutes ago they can
think into the future and plan out
different stages of a curriculum that
they're going to be teaching and
coaching you through we're living in a
time of just incredibly Fast Change in
no small part because of AI but if
there's one thing that I can say for
certain it's that we're all going to
have to learn much faster and much more
often having an AI powerered worldclass
teacher with a fantastic memory sitting
next to you and guiding you through this
unpredictable landscape is just a world
changing and even life changing
phenomenon that we all now have access
to if anything that I covered resonated
I encourage you to create a free account
at notebook lm. goole.com and let me
know what you think
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