I recently borrowed this book from my local library more for the green credentials that the business advice. I found it a really enjoyable book and would recommend it to anyone interested in "green" businesses.
The only chapter of this book that I didn't like was the last one where he talks about how to run a successful business. I felt like if I had wanted to know how to start a business I would have bought a proper business manual not a personal success story, I was much more interested in HIS story than his tips for starting and running a successful business.
Having said that I did find reading about his experience inspiring and it did make me fantasise a little about starting my own "green" or "eco" business. It is that sort of book, it gets you excited.
I would highly recommend this book as an interesting, entertaining and captivating read (I read it in about a week!) but not as a business advice manual.