This is the sixth book I've read on my journey towards developing my own apps. It is definitely not for beginners, as it assumes much prior knowledge and does not "hold your hand" on the details of required coding steps. There is no fault in that, and was expected.
However, having gotten as far as Chapter 5, I am putting this book aside, perhaps never to refer to it again. The text and accompanying graphics are in conflict, and my results do not run. This is EXTREMELY FRUSTRATING. I am trying to learn a difficult (for me) subject, and do not appreciate blatant errors. Wiley Publishing does not provide any Errata on their website for this book, so I am not willing to continue tripping over their inaccurate knowledge.
If I hadn't marked up the book, I would be seeking a refund.
Shame on the author and publisher for rushing this book to market in an obvious attempt to cash in on the growing popularity of Apple's portable computing devices. I admit to seeking the same fortune, but I will hold myself to a higher standard than the dominating "Good Enough" mindset that pervades the manufacturing and publishing industries.