This guide will teach you how to activate beta keys in Dota 2.
1) First you must have a valid Dota 2 beta key.
2) Open Steam. (Instructions for those without a Steam account)
3) Click on Add Game (Found on the lower left portion of Steam)
4) Click Activate a Product on Steam.
5) Enter your valid Dota 2 activation key.
6) The Dota 2 Installer will pop out. Click Next.
7) Play Dota 2!
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