Hi Lisa, welcome to 3fc
Weight Watchers might be a good option for you, but you should check the rates in your area to see if you can afford it. It's not expensive at all, and you are not obligated to continue if you find it's not for you. But I remember being a college student and it wasn't always easy to come up with the $13 a week, or whatever the rate is. However, when I was in college, we had a Weight Watchers group on campus that made use of the WW "At work" program. You prepaid for 6 weeks at a reduced rate, and the meetings were on campus. They may not offer that everywhere, though.
WW offers the most flexibility, so it's great for picky eaters. In my personal opinion, the key to WW success is the weekly support meetings, and their online version didn't live up to it because their message boards are so poorly designed. Of course we have WW forums here, lol, so you are more than welcome to stick around
eDiets is also a great option because they make it easy for you. They have a ton of diet plans to choose from, and then they generate menus, recipes and shopping lists based on your choice. If you don't like the menu they create, you can click a link to browse other meal options and select those instead. The recipes for each meal usually serve 1 person, so it's great for the single chick. Their message boards are not included in the base rate, and you have to pay extra for them. A lot of our members use eDiets for the menus and come here for support. Even I go there for menu ideas sometimes
If you are more interested in changing your habits, you might even consider something like Change One. It's a diet program by Readers Digest and it's unique because it teaches you to change your habits, one at a time. For example, this week your goal would be to eat a better breakfast. Nothing else matters, you just work on breakfast. Next week you'll add lunch. The program covers 12 weeks and helps you change your habits for meals, snacks, exercise, attitudes, and more. They have an online subscription, but all you really need is their book which can be found at most libraries.
Good luck!