This book has a lot of nice concise information of the basics. As some others have said, you can find all this information with a little digging on the net, but it's nice to have it all in one convenient location. This being said, it is the basics. But it's a lot of need to now information including what to expect when you enter the business.
Weighing in at just over 100 pages, it's an awful slim book for it's price. Also, for all the authors talk of making sure you come off looking as a professional that has his/her stuff together, he could have used some of his own advice on the editing of this book.
Typos, poor grammer, missing words, misspelled words, all give an overall feel of, well, unprofessionalism. When the glossary itself even has mispelled words, you have to wonder. Constant, multiple problems on every page force you sometimes have to re-read a sentence to get it's meaning. A spell-check would have been nice and at least one cursory read through to catch mistakes would have been better. "Hole" instead of "Whole", etc.
All in all, it has some nice basic information to digest and think about and incorporate into your plans. He goes over the pitfalls that can plague you fairly well.
The biggest thing is for [$$] it would have been nice to have somethign that was a little more polished and in-dept than something that seems like a big brother dispensing wisdom to his little brother.