When Google first announced NotebookLM, it didn’t launch with any of the innovative learning tools it has today, like Audio/Video Overviews, Flashcards, and Quizzes. NotebookLM started off with the same goal it has today: to help users manage the rapid growth of information. Instead of simply scouring the web for relevant content like most AI chatbots, NotebookLM focuses on helping users organize and leverage their own knowledge by pairing powerful AI models with the material they provide.

The approach of letting you ground the AI in your notes and sources has always set it apart and helps cut down on hallucinations. However, this also means that the sources you add to your NotebookLM notebooks are extremely important. Your notebook instantly becomes useless if you add low-quality or poorly vetted materials. Given that I primarily use NotebookLM for studying, I typically add lecture slides and notes as my notebook's sources.

When I need to expand beyond my own sources, I like to use Perplexity to assist me. NotebookLM also has a Discover Sources feature that lets it find additional content from the web. Though I never used it much, Google recently added a Google Drive integration to NotebookLM, letting the tool instantly search your connected Drive for relevant documents, slides, and notes. And honestly, it might be one of NotebookLM's best updates yet.

You can quickly find documents you've completely forgotten

Hello, forgotten notes

A couple of days ago, I was using NotebookLM to cram for a quiz, and I decided to use the Discover Sources feature to quickly find new sources from the web for my notebook. I then noticed the interface had changed, and there was a new Find sources from header with two options: Web and Google Drive. The Web option did the same thing it always had — it let me type a prompt and instantly pull up multiple relevant web sources.

But the Google Drive option was new, and it really caught my attention. By selecting it, I could type queries in natural language, and it would search my connected Drive for the most relevant files. Upon reaching out to Google for clarification, they confirmed that all Drive files you own or are shared with you will be indexed by NotebookLM. However, files shared with the Everyone with the link setting will unfortunately not show up.

When I first tried the feature with use cases like finding Linear Algebra notes in my Google Drive, it suddenly hit me: I could use NotebookLM to surface all sorts of forgotten documents I’d saved months, or even years, ago. When you want to find a file in Google Drive manually, you typically have to remember its exact name or dig through multiple folders.

With NotebookLM's Drive integration, you can type a query in natural language, and the AI tool will search your Google Drive and suggest relevant sources. Even if you don’t want to use the documents as a source for your notebook, it’s a quick and easy way to find files you might have forgotten about, reference old notes, or simply locate important documents without manually searching through your Drive.

For example, I wrote a bunch of gardening articles a few years ago, and not all of them mention "gardening" in the title. So, I typed "gardening articles" in the Discover Sources textbox, selected Google Drive, and within seconds, NotebookLM surfaced multiple articles, many without "gardening" in the title. For instance, there was a Google Doc titled "Best Herbs to Grow at Home."

Adding sources from Google Drive is now a lot quicker

I no longer waste time hunting through folders

I've paired NotebookLM with a lot of productivity tools, and it’s helped massively boost my workflow. One of my favorite tools to use alongside NotebookLM has been Google Docs.

Typically, when you want to add something from your Google Drive, like a Google Doc or Sheet, you need to hit + Add in the Sources panel, then click Google Drive under the Google Workspace header. After that, you have to locate the file manually and click the Insert button at the bottom-right corner.

While the process isn’t too time-consuming when you only need to do this once or twice, it can quickly become tedious if you’re adding sources from Google Drive to different notebooks multiple times a day. Typing a short prompt in completely natural language, like “my recent calculus notes,” is much quicker and saves you from having to hunt through folders or remember exact file names.

It suggests additional sources you might have missed

Found what I didn’t know I missed

Given that adding sources to NotebookLM notebooks is the most essential part, I often spend a few minutes finding relevant sources to add. Since they're often different assignments I've worked on related to the course, like lecture slides, notes, and past projects, they're usually stored in my Google Drive. There have been times when I thought I was done adding sources to my notebook, started my studying session by generating Audio Overviews and Mind Maps, and asking the AI questions about my sources, only to realize halfway through that I’d forgotten a document.

Since NotebookLM added the Google Drive integration feature, I’ve been using it to find sources from my Drive for the notebook. NotebookLM quickly surfaces relevant files, and sometimes, I find documents I accidentally missed. It's like having another set of eyes going through your Drive for you. This not only saves time but also ensures my notebooks are as thorough and useful as possible, giving me confidence that I haven’t missed any critical sources before diving into studying.

This is one of the meaningful updates NotebookLM has gotten

Over the last few weeks, NotebookLM has received countless updates, and all of them have been pretty great. However, this one might just be my favorite. It's helped me ensure my notebooks have all the relevant sources I need, including documents I might have forgotten about, making my study sessions more thorough and efficient.