How serious are you about the Halo 3 beta? Not serious enough it seems... otherwise you would be out creating 10 minute long tactical analysis videos of the maps in preparation.
The Halo 3 beta runs from May 16 through to June 6 and participants will have access to three different maps: Snowbound, High Ground and Valhalla. You could have gained entry to the beta through the "Rule of Three" promotion that was running, otherwise there are specially marked copies of Crackdown that you'll need to purchase to get an invite.
