Guides (semi-complete)

Playlists
Bungie.net in depth playlist description

Closing/Limiting Parties
in the lobby screen click:  Network : xbox live,
then while in the Invite Only and Open selection window, hit 'x'. this will bring
up a slider that lets you choose the party member limit (1-16) or 'closed'

Callouts and Maps
Pictures of maps, their hiding spots, callouts, information etc
 
Elite and Spartan Models
Descriptions of all armor, advantages, and disadvantages

Forge
Forge Techniques, and advanced information
by halo orlando

Screenshots
Screenshot taking tips and techniques.
By halo orlando