The question isn't posed properly, and I would suspect that is the OP's issue in learning perl. The scientific method and critical thinking are both absolutely necessary; if you are merely a pinball bouncing about a field with no control, programming will be miserable.

That being said, I don't think it's in the rules you can't post here if you're coding for fun. My first project before becoming employed in the field was when I was young- and you can guess, it was just for fun.