Westlake Puts Halo on the Mac - Explains how the port to Mac was developed. - http://developer.apple.com/business/macmarket/westlake.html
Microsoft - Official publisher's site. Includes news, downloads, gallery, features, backstory, and screen shots. - http://www.microsoft.com/games/halo/
Halo Cheats - Cheats for the xbox version as well as other games. - http://home.neopets.com/templates/homepage.phtml?pet_name=Theshoresoftheocean
Halo Binge - Fan site with, tips, glitches, cheats, previews on upcoming halo games, and multiplayer stuff. - http://halobinge.150m.com/
bellaonline.com - Halo Tips - A complete walkthrough with; tips and tricks, plus information on the secret Legendary video clip. - http://www.bellaonline.com/gaming/strategy_lib_halowalk.html