My sister is a dietician, and she has advised me to keep a control on the calories I consume in a day; however, what bothers me is the fact, that I am not able to confirm the amount of nutrition (or calories in my case) in a product. Moreover, she asked me to get usda food pyramid, which is a guide for good food choices, and is the most trusted name in food pyramids available. Thus, I would really like to know usda food pyramid in detail, and where can I purchase it from online? Can somebody please assist? Thanks.