CQB can be very intense, especially with no training or practice. There is a variety of techniques for room clearing, dynamic entries, etc. CAG's course offers some of the best CQB tactics applicable to scenario paintball and simunitions. however, if you are looking for something quick and dirty for your upcoming game, then apply these basic principles. your barrel follows your sightlines. maintain cover as often as possible, and DO NOT attempt dynamic entry by yourself. Also, a tactical reload is advisable just before entry. It sucks to run out of paint when you are getting shot at.
ghost
P.S. number one rule for dynamic entry :the point man will get shot, so try not to be point.