This book is easy to read and simple to understand. The hand Mudras are well illustrated and in the main easy to do.I use this book constantly, and first used it when recovering from a heart operation when other yoga exercises were not possible. The exercises really do relieve a number of complaints, from angina to blood pressure, the visualizations help in relaxation and meditation, and I generally go to sleep at night holding one of the poses. It is a book I never lend to anyone as I like to always have it at home, and I have bought copies as gifts, that have been greatly appreciated.