Hi Marc, just had a quick look through that book.
it’s the sort of book i would buy someone whose only been playing a couple of months, or wants some light reading on a long plane journey, or wants a nice birthday present.
each tip is about a couple of paragraphs to half a page. eg it has a tip on growling, couple of paragrahs – just hum into the mouthpiece! All the tips are not in depth, its more like a reference book.
Other tips – duck calls, long tones, high notes, reed description, minor scales etc … you get my drift. if you’ve been playing over a year, you won’t find anything in depth to help you out, and most of it you will have encountered