One thing I see a lot of people get caught up on is the price of health food. Yes, eating organic can get expensive, and it's the best, but you can still eat healthy for the same price of, if not less than fast food. I thought a thread where we share our money saving tips would be a great service to everyone, so please contribute any tips and tricks you may have below.
My tip:
Kraft foods website has something called "1 bag, 5 dinners". If you go to the kraft website and hoover your mouse over recipes, you will see the title in the drop down menu. Once there you will see an option for healthy recipes, but honestly, any of the options are better than fast food. Not only will it give you a menu for 5 days, but you have the option of printing out a shopping list and recipes. Be careful however, at the bottom of the shopping list is a list of things they assume you already have in your pantry (such as spices). The cost is usually really low. I did this once and the cost of everything on the shopping list (including a few other things I needed to pick up while I was there) came to about $50.
I will add, the recipes use a lot of Kraft items, so some of the stuff is processed, but it is still better than fast food, and it will teach you through example how to go about meal planning on a budget.