i am planning to buy an xbox 360 and get halo 3. However i have already got up to a brigadier at halo and have lots of experience. But i had to sell my xbox 6 months ago for the exams and only went on halo at my friends once or twice. Now i am pretty bad compared to what i was but am still goodish. I just want some very good tips on how to get back in the swing of things without playing another 1000 games.