Click the File tab, and then click Save & Send.
Click Save to SharePoint.
Click Browse for a location.
NOTE If you are saving the document to a SharePoint location you have already used, click its name.
In the File name box, type the web address of the document library, such as http://yourcompany.sharepoint.com/shared documents, and then press ENTER.
Type a name for the file, and then click Save.