Noob Ass Case Fan Question.
 

Are you supposed to have your fans blowing air out of the case or into the case?

I always thought air should be blowing out of the case, but sometimes it seems like air blowing into would work better.

The important part is to establish a steady flow of air. How this can be effectively pulled off for your system is a case of trial and error (or gratuitous CFD simulations). Generally, I try to have two fans, one pumping air into the case, and another pumping air out of it on another side. What my current rig has ended up with is a large fan that pumps air in through one side and through the cpu heatsink (I have a ThermalTake Typhoon) and another fan pumps the air out through the back.