how to create an iphone Application that uses its GPS system

I am fairly new to iPhone development. Right now, I am working on an iPhone game that is being de开发者_Go百科veloped in cocos2d. But I want to create an iphone application that uses its GPS system. I searched a lot on net but didn't find much.

I want to know about:

1. What framework tou use like cocoa touch or cocos2d,etc?
2. Any linksk that could help me regarding this?
3. Any other relevant and helpful information?

You want the Core Location framework. Everything you need to know is here.