Well you need to learn the basics of programming, and that will take you some
time and effort, it's not easy when your starting out, and it does not get any
easier in the short term.
First you need to learn some basic C programming, and then move onto
Objective-C programming, and I would advise doing it in that order.
You can find loads of tutorials on the net, but I would advise learning from
a book of which there are many, books give you the chance to go back
and relearn from earlier chapters, and give you more revision time.
This is the book I would recommend for a beginner.
http://www.amazon.com/Objective-C-Programming-Ranch-Guide-Guides/dp/0321706285/ref=sr_1_1?s=books&ie=UTF8&qid=1329515574&sr=1-1
If you learn the stuff in this book, and more import understand it, then you
can perhaps look at this book as a follow on.
http://www.amazon.com/Cocoa-Programming-Mac-OS-4th/dp/0321774086/ref=sr_1_3?s=books&ie=UTF8&qid=1329515574&sr=1-3
My final advise is that there is no short cut to learning programming, you have
to be prepared for lots of effort and study, but give it a go, and dont give up
when your struggling, just take a break, and start again.
Regards Mark