There are a few areas on this site which tell you about the clan and Halo 3.
1:Clan ops, The clan ops tab tells you How to join and the rules of joining.
2:Skulls, This tab just tells you where to get Halo 3 skulls.
3:Terminals, This tab is a bit like the Skulls tab but tells you where to get the marathon man achievement.
4:Armor, This tab basically tells you how to get the halo 3 armor and the clan armor.
5:Colours, This tab tells you the clan colours and emblem.