Hey Catherine -
Just one note...no matter how reliable a formula, our bodies aren't machines...you may need more or fewer calories than what the formula says. So take the time to experiment and find a level that is right for you, and don't worry if it isn't in line with some mathmatical equation.
Other than that, look around and keep posting! We have tons of people here from all walks of life...including several college students. You also may want to look at the "20-somethings" forum - lots of folks around your age range, with daily check in threads and plenty of room to find new buddies. Most important, keep visiting and contributing. Can't wait to see you around soon!