I really liked this book not so much for the technique but for the way it makes you think about exactly what it is you want from your image, and how you want to get there
It introduces some concepts that were not new to me , like image maps, but these techniques have a definite place for perfectionists, and it is that which really comes across in his book, this is not just a bunch of conversion techniques , but something to challenge your thinking about how you visualise and how to attain that visualisation, so even if you were familiar with the concept previously the chances are that they were vaguely formed whereas this will cement your understanding and ulimately change the way you go about PP (post processing) It is not so much about how to work the software but more about why you do what you do, and in that, it is a concept changer
It is book for perfectionists, for those that like to build the image up from the ground and who want every detail considered and controlled, it is a far cry for one click wonder plug-ins.
For me the techniques are more work than I want to do, but I'm lazy, yet I still got quite a bit from this book in tersm of how I see and image and what I expect from it, and what tools and techniques are available if I am prepared to make the efforrt
His second book from Oz to kansas is more of the same (which is generally a good thing) and I have a review about it elsewhere.. In some ways I found this book easier to read but perhaps that is simply that the other is very involved indeed