Remember to pause after disp.. and so on.

To pause??

Pause stops the program until you hit enter, so if you want the calculator to display something, and then continue, pause so you can actually read it!

How could you mad a ball bounce across the screen using a . (decimal point) as the ball?

Go have a look at http://www.ticalc.org/ as it has a few tutorials and lots of programs.

What does ctrhome really mean? What are it's applications?

<-- what a dork!

 

Thanks dude, I got everything I need to know!