I have it also and while the documents are not the best (Which I wouldn't use anyway... get a solicitor) the content is great.
I have read over it twice and it has helped me more than I can put into words. It is VERY practical and addresses many issues a web design company comes across and many you never think you come across.
I have generated a LOT of new business as a direct result of some of the case studies and information in it.
It is NOT technical. It deals mainly with day to day operations, sales pitch, charging by perceived value (best part) and lots more on how to make more money from maintenance contracts and not just a once off project fee. I'm not usually one to promote products but this is one that has my seal of approval.