I've been a developer for quite a while, and I've suffered through a LOT of technical books over the years. This book is a pleasure to read. BUY THIS BOOK. It does a great job of bringing technical together with practical which I've found absent in a lot of iOS books. If you're interested in developing apps that are visually pleasing, functional and well thought out buy this book. I'm giving all of my apps a facelift with the knowledge gained from this book.