The Level III CD is an actual class setting covering the Level III material for the RBTI. This level discusses the equation and how the diet affects the numbers. Once you study, apply, and understand these "rules" of the RBTI you will be able to actually see what "no" food was eaten and on what day it was eaten. For more information please read and study the "articles" on this website. These "articles" will give you an idea of the "pictures" that you will be able to see once you learn Level III. This CD is a must for anyone that wants to learn the RBTI. We also offer classes for those that want to learn even more and be part of a classroom setting.