NotebookLM for Studying: Free Limits and Tips

Most AI chatbots answer from everything they've ever read on the internet. NotebookLM works the other way around: it answers only from the documents you give it, and it shows you exactly where each answer came from. That one difference is why so many people now use NotebookLM for studying, research and everyday work. This guide shows you how to use NotebookLM step by step, from your first notebook to audio overviews, flashcards and the limits on the free plan.

One thing first: in July 2026 Google renamed NotebookLM to Gemini Notebook. It's the same product with a new name, so everything in this guide applies to both. Most people still search for it as NotebookLM, so that's the name we'll use here.

What is NotebookLM, and what changed with Gemini Notebook?

NotebookLM is a free research assistant from Google. You create a notebook, add your own sources (PDFs, Google Docs, websites, YouTube videos, pasted text) and then ask questions about them. Answers use direct quotes from your sources as citations: hover over one to see the quoted text, or select it to jump to the quote in context.

Because the AI works from your sources instead of the open web, it is much less likely to invent things. That doesn't make it perfect, but it tackles one of the biggest problems with chatbots: if you've ever wondered why AI makes things up, grounding answers in your own documents is one of the best fixes we have.

On July 16, 2026, Google announced the new name, Gemini Notebook, and said it remains a standalone product.

The update brought two changes. First, code execution: each notebook gets a secure cloud computer where Gemini Notebook can write and run code for data analysis grounded in your sources. Google said it was available at launch for Google AI Ultra users and Workspace business customers with certain add-ons, with Pro users on the web to follow over the coming weeks. Second, syncing: notebooks can be opened and created in the Gemini app, and Google said it would bring notebooks into AI Mode in Search soon.

How to use NotebookLM step by step

You need a Google account and a web browser, and there is also a mobile app for Android and iPhone. Google's help page lists three conditions for access: your age verified in your Google Account, a supported country, and, for work or school accounts, an administrator who has turned Gemini Notebook on.

1. Create your first notebook

Open Gemini Notebook at notebook.google (the address on Google's help page), sign in with your Google account and create a new notebook. Give the notebook a clear name, like "Biology exam" or "Kitchen renovation research". Keep one topic per notebook; mixing unrelated documents makes the answers less focused.

2. Add your sources

This is the most important step, because NotebookLM only knows what you give it. Google's help page lists these source types:

• Documents and files: PDF, Word, text, Markdown, CSV, PowerPoint and ePub files, plus images. If your notes are Markdown, our guide to opening MD files in Google Docs shows another route in.
• Google Drive files: Google Docs, Google Slides (up to 100 slides) and Google Sheets (about 100,000 tokens).
• Web and video: web page URLs and public YouTube videos.
• Audio files: mp3, wav, m4a, aac, ogg and others. Audio is transcribed when you import it, and audio with no speech is not supported. For meeting notes that stay on your device, see Google's offline AI Edge Foresight app.
• Pasted text: copy anything in, such as an email thread or meeting notes.

The mobile app is limited: it supports only PDF, website, YouTube, audio and copied-text sources.

Don't have sources yet? Google describes two research options. Fast Research searches the web or your Google Drive and returns a list with a short description of each result, so you can pick what to import. Deep Research is an agentic mode that browses many websites, reviews what it finds and writes a multi-page report, which you can then import as sources. It takes a few minutes, and Google says it is only available to users over 18.

3. Ask questions and check the citations

Type a question in the chat, just as you would with any chatbot. Google's help page says answers use direct quotes, text and images from your sources as citations, which help you check accuracy. Hover over a citation to see the full quoted text, or select it to go to the quote in context.

Google also notes two limits. Responses use only data from your sources, so for creative tasks you may see "Gemini Notebook can't answer this question." And if a source is very short, the tool may reference the whole document without citing individual text.

Make a habit of opening the citations for anything important. It takes seconds, and it lets you verify the answer instead of trusting it. Under Configure Chat you can also pick a conversational style (Default, Learning Guide or Custom) and a response length, which is useful when you are studying. If an answer needs a PDF changed rather than read, our test of whether Gemini can edit a PDF shows what to expect.

4. Save useful answers as notes

When an answer is good, select Save to note in the chat to pin the response to your notes. Google says the original format is kept, including tables and clickable inline citations. You can also select Add a note to write one yourself. Google says deleted notes cannot currently be recovered.

5. Use the Studio panel

The Studio panel turns your sources into other formats. Google's help pages list notes, Audio Overviews, Video Overviews, mind maps, reports, data tables, flashcards and quizzes, slide decks and infographics. The ones students use most:

• Audio Overview: the default format, Deep Dive, is a conversation between two hosts that connects topics from your sources. The other formats are The Brief (one speaker, key takeaways in under two minutes), The Critique (two hosts give feedback on material such as an essay) and The Debate (two hosts argue different perspectives). You can generate overviews in 80+ languages (Google Meet's own live translation reached 63 languages, as covered in Google Meet speech translation languages), choose Shorter, Default or Longer length (Longer is English only) and type a prompt to focus on specific topics or adjust the expertise level. Interactive mode, where you join in by voice and ask the hosts a question, is English only and works only for newly generated overviews.
• Video Overview: Google says you can customize the format, sources, visual style and prompt.
• Reports: ready-made formats such as a study guide, briefing document or FAQ, or an AI-suggested type.
• Flashcards and quizzes: open them from the Studio panel, or use the pencil icon to customize first. You can choose easy, medium or hard difficulty and fewer, standard or more items, and add a custom prompt. For flashcards you mark each card "Got it!" or "Missed it!", your progress is saved, and you can practice "Only cards you missed." Flashcards can be downloaded as a CSV file.

How do you use NotebookLM for studying?

NotebookLM is especially good for students, because it turns a pile of reading into something you can actually revise from.

1. Make one notebook per course or exam. Add your lecture slides, textbook chapters, assignment briefs and class notes.
2. Start with a study guide. Generate one from the Reports option to see the key terms and topics at a glance.
3. Listen to an Audio Overview. It's a good way to review on a commute or at the gym. Use the focus prompt to point it at the topics you find hardest.
4. Test yourself. Generate flashcards and a quiz, replay only the cards you missed, then ask the chat to explain any question you got wrong and check its citations.
5. Ask "explain like I'm new to this". If a chapter is confusing, ask for a simpler explanation or an example, and check the citation to see where it came from.

A practical tip: the free plan counts sources, not pages, and Google states no page limit. Assuming each file counts as one source, 20 photos of notes would use 20 slots. If you have many images, combine them into one PDF first. Google lists both images and PDFs as source types, but the help pages read for this post do not say how it reads text inside a scanned PDF, so check a sample answer against your notes.

A five-day study plan

A tool is only useful if it fits into a routine. Here is a simple way to use one notebook for one exam, with no more than 30 minutes a day.

• Day 1: create the notebook and add the sources you actually need: slides, chapters and your own notes. Leave out anything you would not read yourself.
• Day 2: generate a study guide and read it with the sources open. Note any term you cannot explain in your own words.
• Day 3: ask the chat about those terms, one at a time, and click the citations to confirm each answer.
• Day 4: listen to an Audio Overview focused on your weakest topic, then write down three things you remember without looking.
• Day 5: generate flashcards and a quiz. Mark what you got wrong and ask for explanations with citations.

Is NotebookLM good for research and work?

The same approach works far beyond school.

• Research a big decision. Buying a car, choosing a laptop or planning a trip? Add reviews, spec sheets and articles, then ask for a comparison or the main pros and cons.
• Understand long documents. Add a contract, policy or user manual and ask plain questions like "What happens if I cancel early?" Always read the cited passage before acting on it. It's one of the AI tools that save hours when you use it for the right job: understanding and organizing information you already have.

How to use NotebookLM effectively: 7 tips

1. Keep notebooks focused. One topic per notebook gives sharper answers than one giant notebook for everything.
2. Use good sources. The answers are only as reliable as what you upload. Official documents and reputable articles beat random blog posts.
3. Ask specific questions. "Summarize chapter 3's argument about inflation in five bullet points" works far better than "tell me about this".
4. Tell it who it's for. Ask for answers "for a beginner" or "for a manager who has two minutes" to get the right level of detail.
5. Choose which sources a question uses. Google says you can select which sources in the notebook the model uses to answer, so a question can use only the documents that matter.
6. Click the citations. Especially for numbers, dates and quotes.
7. Customize Audio Overviews. Before generating, pick a format and length and add a focus prompt to set the topics and the expertise level.

What are the NotebookLM free limits?

NotebookLM is free with a Google account. Google's help page lists these usage limits by plan and marks them "Subject to Change":

Each source can have up to 500,000 words, or up to 200 MB for a local upload, with no page limit. Sources fail to import if they exceed those sizes or are copy-protected PDFs. The Gemini chat app has its own file rules, which our Gemini PDF upload limit guide explains.

Chat, Audio Overviews and Video Overviews also have usage limits. The Google help page we read lists those rows without numbers, so this guide does not quote any. Google says daily quotas reset after 24 hours and monthly quotas after 30 days. Check the current figures in the app if you hit a limit. Prices vary by country, so check Google's plans page for yours.

When is NotebookLM not the right tool?

NotebookLM answers from your sources, so it is only as good as what you give it. It cannot tell you about something that is not in your documents, and it will not fix a source that is wrong or out of date. Google also says the tool can make mistakes, so double-check its output. For open-ended questions, start with a general chatbot, then bring the best sources into a notebook.

Fixing "error uploading source" and other common problems

Google's help page says a source fails to import if it exceeds 500,000 words, exceeds 200 MB or is a copy-protected PDF. In practice that leaves a short list:

• The PDF is copy-protected. Bank statements, payslips and some university documents are often locked. If it's your own document and you know the password, you can remove the password from the PDF in your browser and upload the unlocked copy. The tool only removes protection you can already open; it doesn't crack passwords. Google does not say whether every locked file counts as copy-protected, so test the unlocked copy.
• You've hit the source limit. With 50 sources per notebook on the free plan, lots of small files fill up fast. Merge PDF files by topic or chapter into a few larger ones, staying under the size limits, and you'll free up slots.
• The file is too big. Split very large files, or upload only the chapters you need.
• A web page won't import. Copy the text and paste it as a source, since pasted text is a supported source type.

Our free online tools for these fixes run entirely in your browser, so your documents are never uploaded to our servers.

Is NotebookLM safe to use?

Google's help page says "Your data will never be shared by Gemini Notebook," and a separate page covers training and review. For personal Google accounts, that page says your data "is not used to train Gemini Notebook unless you provide feedback." If you share feedback, Google may review the full context, including your queries, uploads and the model's responses. For Workspace and Workspace for Education users, it says uploads, queries and responses "will not be reviewed by human reviewers, and will not be used to train AI models."

Treat it like any cloud service: your notebooks are stored in your Google account, so think twice before uploading highly sensitive documents such as ID scans, medical records or anything your employer doesn't allow in outside tools. If you use a work or school account, your organization's rules apply, and an administrator must turn Gemini Notebook on.

NotebookLM vs ChatGPT: which should you use?

They're good at different jobs, and our full NotebookLM vs ChatGPT comparison goes deeper. Use NotebookLM when you want answers based on specific documents you trust, with citations you can check. Use a general chatbot like ChatGPT or the Gemini app when you want broad knowledge, brainstorming or help writing from scratch. Many people use both: a chatbot to explore an idea, and NotebookLM to study the sources properly. It's a good example of the uses of AI beyond chatbots that are quietly becoming part of everyday work.

The takeaway

NotebookLM, or Gemini Notebook as it's now called, is one of the few AI tools that makes you better at understanding things instead of just giving you answers. Give it good sources, ask specific questions and check the citations, and it can turn hours of reading into minutes of focused review.

FAQs

Is NotebookLM free?

Yes. NotebookLM is free with a Google account. The free plan allows up to 100 notebooks and 50 sources per notebook, with usage limits. Paid Google AI plans raise those limits.

Is NotebookLM now called Gemini Notebook?

Yes. Google renamed NotebookLM to Gemini Notebook on July 16, 2026, and says it remains a standalone product. Its help pages now use the new name.

What files can I upload to NotebookLM?

According to Google's help page: PDF, Word, text, Markdown, CSV, PowerPoint and ePub files, images, audio files, Google Docs, Slides and Sheets, web page URLs, public YouTube videos and pasted text. The mobile app supports only PDF, website, YouTube, audio and copied text. The chat app Gemini has different rules; see how many files you can upload to Gemini at once.

How many sources can I add to NotebookLM?

Up to 50 sources per notebook with no AI plan. Google's help page lists 100 with Plus, 300 with Pro and 500 or 600 with Ultra. Each source can be up to 500,000 words or 200 MB for a local upload.

How do I make a podcast with NotebookLM?

Add your sources, open the Studio panel and choose Audio Overview. Pick a format such as Deep Dive, set a length and add a focus prompt, then play it or select Download to save the audio.

Why does NotebookLM say "error uploading source"?

Google says a source fails to import if it is over 500,000 words, over 200 MB or a copy-protected PDF. You can also hit the 50-source limit. Remove the password from your own PDF, split or merge files, or paste the text directly. If the same file also fails in the Gemini app, the numbers are in our Gemini file upload limit guide.

Can NotebookLM make mistakes?

Yes. It's more reliable than a general chatbot because it answers from your sources, but it can still misread or oversimplify. Click the citations to check anything important.