These instructions are written for OneNote 2016, but the steps should be similar to versions as far back as OneNote 2010.
In order to save a notebook to the cloud, you must have a Microsoft Account. You can register a new Microsoft Account for free at https://signup.live.com. The benefit to storing your notebook in the cloud is that you can access your notebook from any device. You can work on your computer (Windows, Mac, or Chrome), tablet, or smart phone by downloading the Microsoft OneNote application that was made for your device.
Create a New Notebook in the Cloud
Create a New Notebook on the Computer
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