Cheap, healthy, vegetarian cuisine?

I'm a full-time college student, living in an apartment on meager financial aid. I'm also a vegetarian, and to top it all off I'm trying to lose weight. I would like to know some ways that other vegetarians or college students get food very cheaply (if you know of some supermarkets in the Northeast that are cheap that would be great) or some meal ideas that are better than ramen and easy mac (I cook a LOT). If you know of a cheap way to get tofu you would be a lifesaver. Any help would be great. Thanks!