you can go straight to page 187 and quickly learn to practice the healing code. or read the book if you have the time and patience: the above and following are explanations on how the code was discovered, tested, and the results obtained. I started practicing it a week ago. I'm as medical prescriptions, so the question can be permitted, but in general I would say that it works. we believe it or not, I think that every person should KNOW much spontaneous healing methods as possible.