It provides a hub for all of your notes, which can be organised into separate notebooks, and individual sections within notebooks. Watch our helpful video explaining how to use OneNote and its benefits: OneNote fully leverages the cloud and Microsoft technologies to make capturing, storing and sharing any kind of information easy. But many don’t fully appreciate the valuable contribution that the system can make at work. Microsoft OneNote, part of the Office 365 suite of applications, has become an essential productivity tool for businesses.