"The book is completely informative, it tells you everything you need and should know about performances. If you didn't knew about any of it or just about some you will learn and be able to read again every time you need while you practice what piece of performance you want to apply to your shows you'll get better and better at your shows and you will see a change on how the crowd sees you as a musician on stage
Maybe you don't have the budget in the moment to try some of the tips but always remember every band was small and they grew over the time, always work within your budget and try the best thing that suits your songs, genre and aesthetics that you are willing to provide on your performances