Planning to write a game!

Couldn’t think of better way of learning a new language. I am seriously thinking of writing a game using Ruby and SDL. I know ruby is not the best language to do this, but
I just want to get exposed to the field.

Here is the list of things I need to learn for making my first game:

1] SDL (Simple Device Layer)
2] Sprites (I find the concept very interesting)
3] Collision detection (I guess will be complex)
4] Free music and sounds (Yes! They are very important)
5] Game loop (Is that what is it called?)


Right now I am desperate to find more information on above stuff. My first game would be very simple, maybe car racing or shooting.

Hmmmm ....some real interesting time ahead.
My 'First Game'!!