I would reccommend looking at www.codeacademy.com and getting a good introductory grip on js (javascript). A lot may disagree, but learning Objective-C can be a long process compared and there are more and more frameworks out there to develop mobile apps with native-like performance with web languages (html5/css3/js).
Check out the AppGyver Supersonic framework, they have a awesome platform called Steroids that allows you to do cross-platform apps with the same codebase.
Hope this helps have a good one.