I have read a few books on the music industry, in particular the artist management side of things, and this is by far the best resource I've found. There are sections explaining the workings of a management contract, contract length, fees, trial periods, etc. These are covered in great detail, and leaves none of the technical points un-explained. This is not the book to read if you are a band who want to get signed, because that's not the point of it!
The only problem that I have with this title is the fact that it is literally the newest edition of the MMF's guide to professional music management. Much of the text, if not all, is the same, the main difference being the updated directory of MMF managers. So if you have the Guide, don't bother with this one. I have both so was a little disappointed to find that I'd spent £11.00 on something I already had, and that the MMF is marketing the same book under two titles.