Eating Smart

Joy Bauer: The Complete Idiot´s Guide to Eating Smart
In this age of food obsession and questionable fad diets, you owe it to yourself to learn about basic nutrition. This book, out of all the nutrition and exercise books available, is an inexpensive and comprehensive reference for healthful eating and staying fit. Tables and easy reference tell you about such things as macronutrients and fiber, and guide you to sports nutrition, weight management, and specialties like eating while pregnant and feeding the kids.

Not a be-all-end-all guide or a full body exercise book but a good place to start.