The main focus of the book is customisation of web pages, tailoring them to the particular user. The author shows how this can be achieved using a variety of techniques from ONE. The result is a serious study of what can be done and how to keep users hooked and returning to your web pages, with a minimum of effort.
The book is aimed at those with prior experience of web design, concentrating on the IFCs rather than HTML. You could find a fair amount of the content in a number of other books, as well as on the Internet. However combining with the wealth of good examples, having it all in once place does mean it is a good buy.
This is a good book. It's not cheap, but it does have a lot all in one place.