I've been facilitating for several years; I often have people ask for a book recommendation , and this is always the one I name. You will find this book useful if you are facilitating for the first time, or if you are an old pro.
Since you can read the table of contents for this book, I won't repeat it here. My favorites are the model (mentioned in several other reviews) and the different ways to build consensus.
There are other books that have more in depth coverage of each of the topics. What Kaner and his colleagues have done is get to the "gems" of those books for you. It is as if a friend read a bunch of literature on this topic and boiled it all down into one easy-to-use manual. (No, I don't know any of the authors :-))
My only complaint about this book is the format. I find the graphics and the multiple fonts a little difficult to read. I usually hand out the book with the disclaimer "it looks a little hokey, but the content is really solid." If you can move past the graphic design, you'll love this book.