Quick read (it is very short). The book makes a couple of interesting points about how to edit your book. Yet, paradoxically, for a book that insists on revision, I found the book itself a bit too repetitive, as if the author did not really have the time to revise it properly himself.
I got a lot out of this book, particularly with regard to the overall title of my proposed book, chapter sub-headings and detailed revision. I thought it could have done with a bit more on revision, and the writer could have edited down the early chapters - we seemed to take a long while to begin to get to the point.
But I enjoyed his very direct style and his grown-up approach to the reader/writer, and I'm a lot more enthusiastic than I was about my revising!