I reviewed this book as part of the O'Reilly blogger program.
The format of the book consists of concise recipes which state the problem and show how to implement a solution with easy to follow code samples. I love how the e-book has code samples in color with syntax-highlighting, and I found that the code was easy to translate to use with the Ruby Motion framework. Of course, the recipes work fine with native Cocoa as well.
Being a cookbook, I don't think this book was intended to be read cover to cover, although I did just that when reviewing it. You could do that as well, but it might serve you better to use it as a reference. The good thing is that this book is organized almost like a non-cookbook; i.e. it has beginner topics in the first chapter(s) and gets progressively more advanced as you go on.
Although iOS 7 is available now, I would still highly recommend this book.
Read more about this book on its product page.
Read more about this book on its product page.