So I've read most books that are about BASE, such as "Base 66", "Groundrush" and "Confession of an Idiot". While these three are exciting, they are mostly about BASE JumpERS and not JumpING. "The Great Book of BASE" is different - it is a technical book, and reads like the articles on this website but as a coherent whole. As a regular skydiver who just finds BASE interesting and fascinating, it answered all my technical questions. Except one, and that could be the only "downside" of the book: There are no packing photos. The author explains why and even has a funny little blurb that says something like "What! No packing photos?", anticipating reviews like this one, but it still let me down slightly. But even without, this is the best book I've read about BASE, and deserves 5 stars. Read it!