I got this book at a garage sale, and looking at it I would have thought the same thing as many of the reviewers here who seem to feel that it would be useless for kids trying to learn the alphabet and should be reserved for older children and adults interested in graphic design. One reviewer pointed out, for example, that "His B, standing for Bounce, looks more like a softened M than a B on its side."
With those thoughts in mind, I had put the boook aside for use much later, but my 15-month old son soon found it and fell in love with it. A month later, it's one of his 3 or 4 favorite books, and one of only two alphabet books he is willing to spend any time looking at at all. He is completely enchanted by it and asks for me to read it to him about twice a day. Since we started doing so a few weeks ago, he has started repeating many of the words back to me, and excitedly draws many of the letters in the air with his finger or hand while looking at it.
While it's true that the forms of some of the letters aren't made glaringly obvious by their graphic designs (e.g. the B), the word associated with each letter (in that case "Bounce") is printed in a clear serif font on each page, so I simply utilize them as well when reading the book to my son. So for B, for example, I'll point to letter at the beginning of the word, then the word, and say "B is for Bounce." Then I repeat "Bounce. B. Boing! Boing!" as I repeatedly outline the graphic representation of it. He loves it and he's learning fast. For example, because of this book he makes the letter "J" in the air when he wants me to show him someone juggling (or to attempt to do it myself).
This experience is just one of many that proves to me that we too often underestimate children. Kids are smarter than we think, and are often interested in much more sophisticated things than we expect.