Good nutrition is a bit of a minefield since there is no right diet, what one person will thrive on may well be harmful for another, some people will need animal products to be healthy and others can easily do without etc etc. I have found that eating more of certain foods and avoiding certain others has reduced my food intake as an unintended side effect. Healthy eating will likely save you money!
Highly recommmend reading this book, its a real eye-opener on nutrition and the recipes at the back are simple, tasty and very cost-effective. There are torrents out there but well worth having this close at hand
http://www.amazon.com/Healing-Whole-Foods-Traditions-Nutrition/dp/1556434715/ref=ntt_at_ep_dpt_1
Good luck!