Please provide me some iOS game development documentation for beginners. I do already have knowledge about iOS native application development.
I found some APIs like COCOS2d,COCOS3d, OPEN-GL, OPEN-GL ES, etc. But I am not able to find any specific documentation to learn that easily.
COCOS 2d is powerful library to make iPhone games.
You will find few tutorials on following site-
http://www.raywenderlich.com/tutorials
Learn.cocos2d.Game.Development.with.iOS.5 book written by Steffen Itterheim is also good stuff to start.
Also search on google you will find lots of stuff.