I was disappointed that a book whose subtitle is "How to Master Impressionism -- Step-by-Step" didn't have much down-and-dirty how-to advice. There's never a definitive "This is realistic landscape painting, and this over here is impressionism" juxtaposition to explain exactly HOW impressionism might differ from traditional or realistic landscapes. Not sure about the "contemporary realism" review, since I'm not familiar with that as a specific term, but I'd have to agree that some sort of modifier on the "impressionism" label might be appropriate here.
There are a great many paintings by Whisson showcased, and most are quite nice, with a few even breathtaking. Most are done on a very small scale, the 10x12" range.
What few step-by-step demos, or even partial demos, there are are rather pale. Many "compositional plan" examples are merely ghosted-back visuals of the finished painting with a grid superimposed and little explanation as to composition or positioning choices. Most "tonal plans" (value sketches) are just b&w photos (badly screened, imho, so you can't see the patterns well) of the finished painting. Some of the all-the-way demos seem to be done after the fact, as in he started with a finished painting he wanted to demonstrate, and then did another one, this one being photographed as he did it. The results don't match. We are rarely told the why behind choices made.
The use of color is almost ignored entirely.
He does stress sketching, which is great! But if he were to redo this book, I'd advise him to do actual demos, explaining all the way as to his specific reasons for doing everything, and how this demonstrates impressionism. He should go into composition, into value determination, and most especially, into color.
The value of this book is the many Whisson paintings showcased and the inspiration derived from same. For "how to" value, I would recommend trying to find another book.