Just wanted to say that I’m very pleased I chose this book to begin learning how to program the Mac. I’ve never had any formal training in programming languages other than Basic back in the early 1980’s. After researching on how to get started with Objective-C, I chose Big Nerd’s book mostly on the positive comments found on various forums including Amazon reviews. I’m only just finishing Chapter 3 but I’m already enjoying this experience very much. I have the book text running in Amazon’s Cloud Reader on Safari on the left side of the screen and the Xcode window on the right side of the screen. I really hope this leads to an ability to one day program professionally in my retirement years which are on the horizon!