OneDrive for Business is a Microsoft-cloud service. In OneDrive for business, you can store and protect your files, share them with others, and get them from anywhere on any of your devices.
Your NMBU area in OneDrive is called OneDrive for Business – Norwegian University of Life Sciences while your eventual private account will be called OneDrive – Personal if you choose to connect to this from your NMBU computer.
To sign in to your private OneDrive, use your private email account.
Here is a quick guide from Microsoft on how to use OneDrive for business.