I wanted to like this book and appreciate what the author was trying to accomplish. Unfortunately, I feel that the author missed the mark. This book is a generic overview of camera functions, lightroom software, and digital imaging thrown in. I do not believe that most Leica M9 users need this general overview - it is contained in the manual and from general digital imaging experience. The missed opportunity here is that the author could have delved into the details of the M9 and their practical impact in image-making decisions day-in and day-out; that is what I hoped the book would be.
Net/net - if you are a beginning digital photographer who has purchased an M9, this book could be of value to you. Otherwise, best to look elsewhere for more in-depth knowledge and advice.