Any class presidents?

Hello fam. Im plaining to be freshmen class Pres. or VP once I get on campus. So I'd like any ideas as a class officer and the actual duties as well as maintaining class work. I've been class president in HS and a member of student council, but im sure it's a little different in college. So please help a sista out. Oh, and please tell me some of the worse mistakes that your class president did (I can learn from them). Thanks!