As mentioned in the article, there are no subsections, no table of contents. It consists of almost 700 paragraphs. You have to read it from beginning to end. Why I find that great in its own way? Maybe the analogy with the movie >Being John Malkovitch< may help: you are like a visitor in his head. Our thoughts are not tidy and ordered into sections. When you think about a problem (like he does with language and what it is and what it can do and what not), your mind wanders; you come across different issues, tackle them, then come back. It‘s like a written thought process.
I can really recommend this book. Its language is easy. As soon as you get used to its style, you can follow.