I am currently working on an iPhone game. I'm at a point where I got the whole interface. Now need to polish off some code and add some code.

I have many questions about what code to add, so here it goes;
-How do you make multiple images bounce around the screen?
-How do you make a timer that gives you your score when a dragable image gets hit by a bouncing image?
-How do you save scores with the score you got from the timer, and add a name to it?
-How do you make the scores auto arrange from highest to lowest?
-After you get hit by a bouncing image how do you make the images reset?
-When you get hit how do you post your score to Facebook, Twitter or eMail?
-How do you make a pre-set tweet, email, or facebook post when you tap a button?

If you have even the smallest idea on how to do these please reply or email me at; dturner97@gmail.com

Thanks for your help!