It requires a small section in a book to tell you how to undo all the tricks you've had to learn in the past 10 years to make an HTTP/1.1 website fast. Most of that is irrelevant and detrimental with HTTP/2, which is kind of the point. You'll get the benefits of those optimizations without having to do anything special to get them.

That book is also a phenomenal resource on the performance of all things web-related, so you should check it out regardless of any concerns you have about HTTP/2.