There are a lot of useful tips in this book, but the author is very opinionated to the point of being misleading. This is not a book that will teach you how to paint, but it will teach you the author's sensibilities regarding landscape painting. I agree on some points that are probably widely accepted (don't paint individual blades of grass in a landscape), but some other points are just pure opinion—the author states that everyone prefers warm colors in paintings to cool colors in paintings, and I disagree entirely. And because I would need to be included for "everyone" to agree, it's just not true. I think this book should have been called "What Animated Backgrounds Look Like", because the author explicitly states that your painting should have this aesthetic. I kept getting the feeling I was looking at hotel art as I read this, and when he wrote about animated backgrounds, I felt I must be right.
I don't have the same taste as the author, but some good, solid fundamental guidelines are in this book. Please take it with a shaker of salt.