Let me start this by saying that I really liked the structure of the book. For each chapter, there is an explanation of what will be covered; a "call for action" which shows the code and then describes, step by step, what is going on; a further explanation on when running said code; and, finally, some pointers on where to go forward.
That being said, this is a mess of a book. The kindle version is completely mangled on the source code. Indentation is completely wrong, which makes the code hard to read; the code is full of stupid mistakes (like having an object and trying to get it again with