Programming apps is difficult to begin, there is a critical point of time when new programmers either break through and fly on their own or they quit. You can browse your local book store and spend $40 - $60 on a book that may be out of date or contain a lot of non essential information, or you can spend $1.99 to get the tutorials listed below that provide functions that almost all App programmers will need to know.
Note: You will need an Apple computer (iMac, Mac Mini, MacBook) to download Xcode (free) and start programming; this App is a guide to programming with Xcode.
This is Xcode Academy 101, content includes:
A Dictionary with 27 common Xcode terms
Creating your first app
adding Buttons, images and backgrounds
Tab bar controllers
Intro to Objective C
Creating a Webview
creating a Scrollview iOS 6.0
Pinch and Pan
Playing sound files
Text Fields and the assistant editor