Programming Terms?

This is really stupid, and I feel stupid for asking, but I'm going to do it anyway:

Can someone explain programming terms to me? That seems really vague, I know, but I can't seem to grasp this for some reason. I'm currently learning C, and I really don't understand why it's not computing. I get floating point numbers since that's really easy, but everything else is kind of confusing for me.

For instance, function. I really cannot get this. Can a function be anything you name it? Say cool()? Can anyone help me?

a function is like a souped-up procedure.. or a procedure is a function that doesn't return any value..

eg.
void ThreeBlanklines(void){
printf("\n\n\n\n");
}