What to eat every day to save money? I don't know how to cook!?

[fc77]

Hi, I'm a full time college student and I also work full time. I'm always busy so I don't have much time to cook (and don't know how to do it either). Every day, I eat total garbage food starting from breakfast to dinner. I used to stop by at fast food places for a while but then I started to feel really disgusting so now I go to places like subway or buy salad at Wendy's and such. OK, eating out all the time is making me lose all the hard earned money but I don't really know what to do. I tried eating sandwich every day but I don't really enjoy sandwich & I got really sick of it. I bought a lot of can food but I don't feel good eating that either. Can someone give me examples on easy to prepare food that doesn't cost me much? Thank you