I've played the 1st Halo on PC & I loved it. However, I missed out the rest of the other series due to not having an XBox.
I love the design and the story of Halo but I could never get to play the game.
Then I saw the encyclopedia and thought I should get it, especially when Dorling Kindersley revise the encyclopedia with information on Halo : Reach.
Bought this from Amazon.ca but I guess you can find 'em locally.