hey foxy, I'm in the same boat. Got my A+ and studying for network+, and trying to stay caught up in school (summer classes). I find that I do best after a little nap. Also, I don't watch TV for at least an hour before I study, I usually clean the house, or go jogging or something. If I am feelling extra out of it, I can't even get on the internet because I get too distracted. Caffiene does hell on me cause I alwasy feel like I have to get up and go do something instead of study. Besides that, the usual. Lots of water (not too much, don't want to get up every 20 minutes), good food, etc...
....Works for me anyways