The first thing you would notice about the book is the unique size which is landscape-perfect. Although I bought a used copy,still its like-new. The first part of book illustrates the basics needed for the landscapes like perspectives, using quality probes such as brushes,papers etc.; which is really good for the person who is been quite familiar with watercolor medium and landscapes. I wouldn't say this is ideal for the very beginners in watercolor. But, yes, definitely good bunch of information for the intermediates. Specially, I found some tricks-n-magics like water feathering and masking pretty interesting while trying them for the first time!
The later part of the book focuses on the various natural scenarios like sandy seaside, riverbed, fields, puddles, sunset, snowy-rocky mountains, shallow water, falls, reflections of moonlight, buildings and lots of bridges with respective palette for the painting. The most impressive part according to me is- the work of reflections of objects and light in water is absolutely mind-boggling! Still I feel there should be atleast one painting explained throughout specially the ones with special techniques used in painting. Anyway I found author's video tutorial online which could be greatly helpful.
All in all, definitely a good find for the people who are really exploring the medium of watercolor. If you are able to discover few things on your own; then this book will be like wizard-stick to boost up your level of proficiency.