You can easily delete a notebook in OneNote when you no longer need it by accessing File Explorer and removing it there.

How to use OneNote effectively This tutorial will show you how to take notes with OneNote & use it effectively for college, university, professional, etc., work on Windows 10.

OneNote is Microsoft's note and note-syncing app. It's deeply integrated into Windows 10, so there's no better time than now to start learning to use it ...