T.F.
I agree that Varsity should be a good site. You might also try Teamleader as well. ACA and NCA should have good info as well.
Are you looking for competitive cheer? Go to your local cheer gyms (not gymnastic places..... specific CHEER gyms) and get some info from them.
I don't quite understand what you want to do so it is hard to answer. Not sure if you want to train to be a coach, already are a coach, create a team, create a new competitive team, have your own gym, etc...?
Good luck