iphone where to go forward from learning cocos 2d by ray wenderlich
<p>my question is about the ray wenderlich's book 
Learning Cocos2D: A Hands-On Guide to Building iOS Games with Cocos2D, Box2D, and Chipmunk</p>

<p>a very good book, now my question is that after studied it and implemented it, now when want to move forward for some more advanced game programing, what should be the way? means is there any other book or video tutorials links or any tutorials that can guide u from that stage for more advance work and expertise in iphone game programing...? plz. guide me thanx n Regards Saad</p>
