Firstly this is not a book telling you how to take better photographs. That's the nuts and bolts you either are told by someone or, better still, learn by simply picking up a camera and playing.
This book is about how to see the picture...and how to see the same picture from a different view. For instance I like to shoot flowers sometimes, close up, but following an idea in this book, instead of standing over, or by the flower, I lay down and shot upwards and forwards, (I also decided to have the sun backlight the petals), the result was a far more interesting picture, and a picture that caught people as they looked,...'oh that's stunning' some kind person said.
That's the idea behind this book, to take what you know, and then say, but try it from this view. Like landscapes, always with a wide angle, but then use your telephoto to shoot detail. Or try a landscape laying down, so a mass of colourful flowers with a skyscape overhead.
I've been taking pictures for 25 years now, but this book did give me a lot of thought and many ideas that maybe some I once knew but had forgotten, and others I hadn't even thought of. So yes, this book is excellent.