[metalgearsolid]

As a native iOS developer I will gladly help you answer some of these questions if you want to provide more specifics on what you're looking to do. Could you reply with your email, or put it in your HN profile? Or just elaborate here?

On mobile we work with pretty high-level abstractions, so if you did this yourself, most of the new stuff to you would be the frameworks like UIKit or Core Data (at least on iOS).

Edit: Ray Wenderlich and objc.io are my go-to learning resources for iOS stuff

[m11a]

People suggest Ray Wenderlich often, and he seems great, but it's mostly videos which I personally cannot learn from.

He has books, but they cost a fair bit (around $100/book iirc), and they're not included in the subscription I think, unless I'm missing something.