This book , though I have only seen it for one night has shown e thigs I never would have thought of about drawing comic book-esq figures. Its definately a great book for people who aspire to professionally pencil comic books, like myself. But it is not medically accurate, so in that case, not meant for realist drawing.
I see that a few of the reviewers have been rather harsh with this book. Well in that affair, let me say that they are cases of people not looking at this book as a comic book referrence, but rather a realistic, fine arts way. So if that is what you are looking for, I do not suggest this book.
As to the explanations in the book, they are a bit tough to understand, but if you study carefully the illustrations, then the instructionsbecome much clearer.
Also, as a side note, as its been stated this is NOT a good book for beginners in the comic book field. In that regard, I suggest "How to Draw Comics the Marvel Way," by Stan Lee, and John Buscema.
To sum it up, this book is for the small group of people who are not beginners to comics, but still need to refer or learn about the comic book style male body.