It has taken me over a month to re-read his book. Taking extensive notes, re-reading as I go. He has spent a lot of time studying storytelling. The pages are crammed with useful insights and information. Being old, it requires a re-doubled effort to try to remember much of it.
It can usually get through two or three pages at a time before taking a break. Five pages an hour is outstanding progress.
I would highly recommend reading it if you want to write novels. He will give you new ways to look at stories, characters, plots, and life in general.