I just finished a project and I have free time so I am searching for stuff to learn. I was between some kind of AI because its been a long time since I did that, openGL for shaders or iPhone development but for games so its either Cocos2D or openGL ES right?...

If you have any other good ideas about learning something can you please add a learning source for me to check?

If you haven't already, try learning a functional language (LISP, F#, etc). Always good to learn a different way of attacking a problem.

Quote: Original post by Tipotas688
I just finished a project and I have free time so I am searching for stuff to learn. I was between some kind of AI because its been a long time since I did that, openGL for shaders or iPhone development but for games so its either Cocos2D or openGL ES right?...

If you have any other good ideas about learning something can you please add a learning source for me to check?

I'm going to recommend you learn Haskell for the same reason ChaosEngine suggests other functional languages. Haskell is likely going to be more different than other mainstream functional languages, which is why I recommend it.