The book is written in a very clear style. Both the electronics and the software part are explained very well. I think the book would also work perfectly in secondary school to get teenagers familiar with how things work.
The only drawback I can think of is that the book does not contain some empty pages (per chapter) to make notes.
Just received, excellent packing, new book in excellent condition. Highly recommended to everybody interested in arduino and automation. Only one little problem with post office, bu it is not amazon fault.