Microsoft OneNote is a great tool for teams to track project notes, meeting notes, share information, and much more. While OneNote is generally associated with OneDrive for storing and syncing your notebooks, this functionality is also built into SharePoint as well.
Using the Site Notebook Feature
SharePoint provides a Site Feature that is enabled by default called Site Notebook. When this feature is activated a OneNote notebook is created in the Site Assets library of the site. A link to this notebook is added to the Left Navigation (Quick Launch) for easy access.
This notebook can be edited in the browser or opened in your favorite OneNote client (Windows Desktop, Windows Modern App, IOS, Android, Windows Phone).
Creating a OneNote in a Document Library
You can also add OneNote notebooks to your Document Libraries. Just add a new document and you'll see an option to create a new OneNote Notebook.
This gives you the same capabilities as the other approach. Instead of the OneNote being created in the Site Assets folder, it is created in the Document Library of your choice. Again, you can edit the notebook through the browser or open it in your favorite OneNote client.
Why use OneNote in SharePoint?
Using OneNote in SharePoint gives your team some pretty cool capabilities. The most important is that everyone on the team will have access to the same notes.
When you have a meeting, take your meeting notes in OneNote. Your team could keep separate meeting note pages or share the same page. It is fun to watch the near real-time sync at work here. You can be talking to a client and the notes start appearing, like magic, on the page (if someone else is writing them of course).
Your OneNote notebooks also appear in SharePoint search results and adhere to you SharePoint security configuration just like any other document in SharePoint.