The first thing that you notice about this book is the unique chapter and paragraphing system.
Every paragraph begins with the word 'How', for example, How to define simple functions.
The paragraphs are all numbered. The major flaw with this system is that there appears to be no structure, thus making it hard to follow. Also due to the unusual chapters I found I had to do a lot of flicking to the index and back to find the area which I required. It gives lots of examples, which are precise and to the point, although quite often a full example is not shown, thus making it harder to understand. My opinion of this book is that as a teaching aid, it lacks a formal structure and as a reference manual it is really too basic and the examples are slightly lacking.