I'm 19 and 168 pounds and i want to lose weight. i'm slightly active. what can i do? i live on a college campus.

Lifestyle change: You are very wise to want to change. Be brave, and join a group of peers who exercise together; work very hard & they'll accept you though at first you'll have trouble keeping up. Being fit normalizes your appetite & this is much better than counting calories -- though you might want to read a science-based book on nutrition while you're at it. Good luck.