I bought this book to relearn how to draw properly. While the book is directed at a young audience, adults-at-heart like me will benefit from the drawing principles such as foreshortening, placement, size, overlapping, shading and shadowing, contour and horizon (plus 1 and 2 point perspectives). My disappointments were that a few later lessons repeat previous lessons and that it uses blank pages after each lesson for you to practice on. I suggest you use a separate sheet of paper to do this so you can pass this book to your kids and their kids and so on and so forth. Despite these, I still rate it 5 stars.
I can now draw simple everyday objects both as cartoons and as realistically as I can. They're not professional quality yet, the book recommends daily practice until they are and that's exactly what I'm doing.
This isn't the only book you should buy though if you want to draw artistically. In my case, I'd like to draw comics-style characters and objects so I can move on to animating them later. I got Tom Alvarez's "How to Create Action, Fantasy and Adventure Comics" (separately reviewed) which is also an excellent how-to book.