1,  Select language edition you are requiring and download

     English Version 
     Brazilian Version
     Croatian Version
     Deutsch Version
     Español Version
     French Version
     Greek Version
     Italiano Version 
     Português Version
     Traditional Chinese Version

2,  Double click to run the exe file, office installation program will work automatically until it's done.

3,  After installed, open any office application, do the steps below:
     File → Account → Change Product Key