That's quite impressive considering Amazon aren't even showing it as being released yet.
So far I've only had a chance to skim through it but first impressions are of an excellent guide that takes you through pretty much everything you need to know to build your first OO9 layout, or, for that matter, your first layout in most scales, I particularly liked how balanced the content seemed with no undue emphasis on any one aspect. and also how it dives straight in to projects that presume the reader is going to build things for themselves.
I could see a definite opening for a similar approach to a book on finescale standard gauge modelling.
Well worth a more detailed read..