After the purchase is necessary to:
1. Download and install Steam
http://steampowered.com/about (if not already installed);
2. Register a new account on Steam or go to the existing one;
3. The resulting link after purchase, you must copy and paste into your web browser, log in under your account Steam and accept the gift itself in a library (ie activated on the account) or to accept and add in the inventory (ie, a gift can be will someone pass);
4. After activating the game will appear in the list of games and you can download it from steam, and then start playing.
_____________
tradable gifts
