Valve announced its Steam service will be expanded with game guides:
Valve has announced today that it has teamed up with Prima to bring readable guides for some games to it's digital distribution platform on PC and Mac, Steam.
The guides on offer cover some of the most popular games on Steam, including Battlefield: Bad Company 2, Left 4 Dead 2, Just Cause 2 and Dragon Age.
All of the guides are readable through Steam's in-game browser, but can also be viewed offline at any point.