I feel that this book needs an editor. It is very good and the advice is generally great, but it feels more like a series of lectures that are recorded and simply put in writing. I feel that this makes it a bit too wordy at times and sometimes images would help. Of course, during an actual course this is practical, but the teacher should take into account the medium. In this case the medium is a book and some ideas would probably be easier to be explained differently. Additionally it is quite repetitive. I would say that a professional writer would be useful