Office 365 - Sync your OneDrive for Business library to your Computer
If you are using OneDrive for storage of files you can access them through the web by logging into outlook.office365.com with your full email address and email password and clicking on OneDrive. However, you may wish to have the full library synced to a folder on your computer to allow for offline access. The link below provided is from Microsoft.com..
Sync your OneDrive for Business library to your Computer