Bought it, read it, passed it along. I don't know if it is the best book on lucid dreaming (as I haven't read any others), but I can only assume, and either way it is the only one you would ever need.

I didn't find it useful myself, but it was an alright read, concise, linear, and not too dry. I have a technique that works for me though, so I really just read it out of interest. It would have been tremendously useful had I not known anything about lucid dreaming, but otherwise, probably not worth a read (might be alone in this opinion). That is why I have since passed it on to a friend who expressed interest in lucid dreaming, hopefully sometime he will do the same.

As a note though, I pretty much had a lucid dream every night I read the book, so that was a bonus.