XBOX SLIM QUESTION(S) NEED HLP ASAP!?

K so im in georgia dis summer and workin up my cash to get a xbox 360 slim in the next 3 and a half weeks cus thats when i leave! So im asking are there ANY AND I MEAN ANY tips on keeping my xbox from over heating. Any places special to put it! Do the fans really work plz help cus im leaving to florida soon thx u so much!!