If you are asking that question, you have not yet chosen a plan. Each low carb nutritional program gives you information on the allowed number of carbs (or types and amounts of foods) for a given stage. At LCE, we urge you to look at the various low carb programs, choose one that makes sense to you, and then read the book. Visit the bookstore or library and read about the recommendations for (and reasoning behind) the various phases of the program you’ve chosen. Then, stop by the forum for support and to benefit from the experience of others.