OFFICE 365 - ACCESSING A SHARED DOCUMENT IN ONEDRIVE
Instructions for accessing a document shared with you by another in OneDrive, the storage app in Office 365
1. Sign into Office 365
2. Click the App Launcher button
3. Click OneDrive
4. Click Shared with me
5. Find the file you'd like to open and click the filename
6. Select Edit in Browser to edit the document in the browser (not as much functionally as the desktop applications, but allows others to work on the file at the same time as you).