The book clocks in at about 145 pages and ten chapters. Seven of those chapters introduce the major components of the language: grammar, objects, functions, inheritance, arrays, regular expressions and methods. As I said, this book is not for novices, but one could (maybe) pick up the language from these chapters. If one is already familiar with the language, Crockford does provide some valuable insights into how the language actually works as opposed to how most of us expect the language to work. Of particular note are the sections on objects, functions and regular expressions.