If you're looking into a serious reference check out iPhone App Development: The Missing Manual (http://www.amazon.com/iPhone-App-Development-Missing-Manual/dp/

If you're looking into a serious reference check out iPhone App Development: The Missing Manual (http://www.amazon.com/iPhone-App-Development-Missing-Manual/dp/0596809778 http://www.amazon.com/iPhone-App-Development-Missing-Manual/...). It covers so much and then some, it's truly the holy bible of iOS development work. Otherwise try checking Google: http://www.google.com/search?q=develop+iphone+apps http://www.google.com/search?q=develop+iphone+apps