« Speak the language
If you ever wanted to get into iOS development, make sure you speak the language. Which is, Objective-C. Take your time and get to know that beast. Please, make world a favor, don't use all those fast-learning-guides, like "How to create blah in N days". Useless. Don't create new army of engineers who know "Rails" but don't know "Ruby". That's a pattern to retardeness and stupidity. The pattern to produce low quality low value software.
If you think within the same lines, I can't recommend enough this book - Programming in Objective-C
by Stephen Kochan. Incredbible helpful, and an awesome starting point for you into the world of Objective-C applications. Money well spent.
You'll thank me later.