Sync documents with OneDrive

With Microsoft OneDrive, you can get to your documents from virtually anywhere. Start working on a document on your computer, and then continue on your phone. Or you can do it the other way around. To get start on your phone, Sign in with your Microsoft Account and then go to the Office Hub.

To Sync documents from OneDrive to your phone

     1. On your phone, Sign in with A Microsoft Account.

     2. In the App list, tap Office. (In windows phone 8, OneDrive is called SkyDrive)
     3.To open a document, do either of the following:
               -  Tap OneDrive, ta a folder and then tap a document or notebook to open it.
     4. If you don't see the file you're looking for OneDrive.
Source: Nokia Help + Tips