Click New, and then choose the type of document you want to create
The new document opens in the Office Online program you selected. For example, selecting Word document opens Word Online. (The documents save automatically).
To rename the document, click its name in the title bar, type the new name you want, and then press ENTER.
Save Changes
Office 365 saves your changes automatically. Look on the status bar at the bottom left corner of a Document Online. It will either show Saved or Saving
Uploading Personal Documents to OneDrive
Sign in with your Microsoft account at OneDrive.com
On the OneDrive page, click Upload near the top of the page, and upload your files. Add files.