This book is a functional one that provides the history, timelines, and basic beliefs of all the world’s major religions. It serves to be quite helpful for a person who needs quick statistics or a quick summary of a religion.
Its name, however, reveals the books biggest weakness. It attempts to make world religions “simple” and fails to provide an in depth study of any of them. This is perhaps an unfair critique, however, as the book is obviously not intended to provide an in depth study at all.
I do intend to hold on to this book and use it as a reference and recommend it to others for the same purpose. However, if your goal is to really dig into a particular religion, I recommend you look elsewhere.