This is a decent overview for someone who has perhaps only recently been introduced to Christianity (they'd have to be living under a rock to never have heard of it before, and yet to be reading this book--is there an English-speaking area in this world that hasn't had at least one church or church group in it?). This book drastically oversimplifies some of the differences, and fails to go into the depth that someone interested in Christianity (for any reason, personally, academically, or critically) would want. The information it contains is all available online on many websites, and this is really not worth the money. ( )