I bought this book from here on Amazon about a year ago. Since then I have rarely used it except for a few times for refrences if Im not able to get online at the time. It has some helpful information but for the price it isnt really worth it since you can find EVERYTHING in that book online for free. The first half of the book just goes through the types of pens and ink you should use and the life of a manga artist etc. Then it finally gets to the good stuff but it barely touches anything before moving to the next subject. And the part I was mostly upset with was the hair section. It shows you how to draw hair flowing and such but thats it. Does not give tips how to draw hair at all. So basically, the only reason you should by this book is if you want to waist money for something you will probably only end up using for quick reffrinces. There are better books out there for that... like an actual Manga comic or something. Or a gallery book from your favorite anime show.
If you want to learn the basics of drawing manga, this book is useless and I can save you money right now. Just visit BakaNeko, PolyKarbon, MangaTutorials websites or Julie Dillons tutorial located on the [...] website. Everything you need is on those sites and all contain more info than this book.
There are some other good How to Draw Manga books out there when you wanna start honing on a certain area but this isnt one of them. Save some money and visit one of the above manga sites or go purchase on of the other How to Draw Manga books that are spicificly for what you wish to get better in.