It's a very interesting read. I'm about 3/4 of the way through. I had read two long fiction books before and wanted to get back into non-fiction, so I took a chance with this because I knew about the mass suicide thing only vaguely, and didn't really know much else at all about it.
You know how you always hear like serial killers started by killing animals when they were kids and stuff? Similarly, Jim Jones was a master manipulator from a very early age. He would have audiences and keep them as long as he possibly could in his barn loft and do "healing" shows and that type of thing.
It was a very good choice for a book. It's a really, really creepy book because it actually happened, but it describes how he used fear, making himself the victim, and going on the offensive to have absolute control over his "church."
It's just incredible, because his inner circle were mostly educated people.