The book is called "Conspiracy Files" - David Southwell & Sean Twist - It's pretty cheesy overall but a fun read.
It covers a background to the conspiracy (it goes through people, places etc...), the strange disputed part of it, likely suspects, unusual suspects, convincing evidence, mysterious facts and a skeptic's view. It's not a novel or some scientific journal or anything, but only a concise collection of many, many conspiracy theories. It has intrigued me to look into more of them though, being that they only cover the topic briefly.
As for your questions, I'm just about to run out the door, not that I can really answer them.