I have bought this book. In my opinion it is an average book whose author may be good at coding but definitely not so good ať teaching. I am not a friend of long code listing presented in books and this learning materiál is based on rewriting code from book to computer. There is a warning from author in preface but I refuse to type 4 or 5 pages of code to dive deeper into arrays or records.
The worse thing from my point of view is that graphic presentation, I mean fonts, pictures, tables is wierd. It sinks the book under average level. Since I still have not written any book I may be wrong and consider my review as personal opinion
I do not recommend this book.