The following instructions demonstrate the process of setting up the Windows 8 OneDrive for Business app with your Office 365 account.
Install the OneDrive for Business app, available from the Windows Store. Open the app when the installation completes.
Click the Sign In button.
Click the OK button, then the application will begin to sync your files.
Your OneDrive folder will now be connected. You will now be able upload, download and work with your OneDrive files from the application.