If you're looking for a book full of plans for raised beds, inspiration for raised bed gardens, and lots of pictures of what you can do in raised bed gardens, this is the book you want. If you're just looking for information to build a raised bed, read this.
If you're looking for guidance on mixing soil for raised beds, growing techniques, soil maintenance, placement advice, etc, this one might not be for you. I wish it had taken a more in-depth look at the gardening side of building raised bed gardens, rather than just hover around the construction. There are 3 different ways just to make giant wood rectangles for your raised bed garden. I don't think I needed that many.
I suspect that this was edited together from content of a blog/website and other books. I know I've seen some of the photos - and even entire tutorials - in other books from the same publisher. It's not bad information, though you might want to pair it with a book on gardening if you're a beginner.