This is a great book - it gives an introduction to fitting, how to understand your figure etc. However, one of the ways it gets you to understand your figure in relation to the measurements used by clothing manufacturers, is to get you to draw an outline of yourself - not easy when you live alone like I do!
It gives clear and concise diagrams on how to fit a pattern for all manner of adjustments such as a gaping armhole, full bust/high bust, narrow shoulders, round back..... the list goes on. The only negative thing I would say is that it doesn't cover my particular 'flaws'
I would recommend this book if you are serious about your dressmaking and have the time and the inclination to carry out every single pattern adjustment to give your clothes that perfect fit.