Steam

  1. Download and install steam here , then log into your steam account

 

  1. Click on the bottom left of the main window  “ADD A GAME…”

 

  1. Click “Activate a Product on steam…”

 

  1. Click “NEXT >”

 

  1. Click “I AGREE”

 

  1. Enter product activation code and click “NEXT >”

 

  1. Check in “LIBRARY”, double click on the selected title, click “NEXT >” to start the download