I like this book so so much!! I don't know if it's actually worth 30$ (or something like that) just for the ebook, but I like the fact that you're able to see 21 different drawings from amazing artists! One thing I have to say is that this book is mostly for illustrators in fact proportions and thing like that aren't explained from a realistic point of view, but from a more cartoony one. About the artists
As I said one of my favourite things about this book is that it has many artist featured. I already knew Loish and Jazza (and I love their drawings!), but now I have a new list of artist I should check! Thanks to this variety readers can also see what is more appropriate with their style or they can also find a way to improve it!
About the tutorials
This book begins with lines and ends with composition and things like that. If you are considering to buy this book mainly for tutorials I wouldn't recommend this, in fact there aren't many explanations on basic things. The book has everything but the first chapters are very short and I think that the most helpful things are the tutorials for composition and creating characters.