As much some books are really wonderful in allowing rapid progress of work, as the others are pure scam as he takes out of previous publications or a book ... Well for cash only.
In this case the book in question here is good. The image quality is not terrible at all, but the content that you will progress is to date!
I improved my notoriously portraits this item. Even the one my neighbor who is usually a mix of Sophie Davant and Demis Roussos.
If with that you are not convinced !!