How to start an iPhone game using cocos2d that can be ported to android

Hi, I’m starting in the creation of an iphone game using cocos2d and i was thinking how difficult would be port this game to android.
I learned objective-c . I’m not a big C or C*+ guy but I can pick up different languages .
I have some questions though.
I was thinking if is a good idea use only objective-c or if i should combine with c*+ . What should i do to port my iPhone game to android?

Then i know that cocos2d-iphone is written in objective-c so my question is What should i do in order to use this library for android.

I have no previous experience in porting a game so i hope you can give me a hand.

Thanks for your help.