I wish I had read the negative reviews before buying this book because they are spot on. The basic structure of the book is like this:
James Hetfield is born. Metallica release an album, they tour a lot. Metallica release another album, they tour a lot. Metallica release another album, they tour a lot...
That's really all there is to it. I expected an account of James Hetfield's life, not a vague history of Metallica. Each track on every album is commented on, yet only 2 or 3 have any significance to Hetfield's life story, the rest is just there to fill pages.
Also, I expected an impartial viewpoint throughout the book, but it's clear that the author is a thrash metal fan who was unwilling to accept the style of their later music, and so just slags the band off left, right and centre when telling the story of their later years. If I wanted to hear opinions on their albums, I would have bought a music review magazine, not a biography.
The only original parts of the book that aren't lifted from past interviews are where the author has spoken to the people close to Hetfield. However, he must have asked the same vague question to every person - "What do you think about James Hetfield?" Every response is also the same - he's a very quiet person who finds it difficult to trust people, and not like the beast he portrays on stage. I got bored of reading this view point after the 5th time.
Overall, I really gave this book a chance to get good, but found reading the second half of the book a chore. Every chapter is just a repeat of the previous one and I don't feel like the book progresses through Hetfield's life at all. It just vaguely follows Metallica, and every now and then throws in a comment from someone about James.
Reading the Wikipedia article about him is more informative, enjoyable to read, and free.