Here is the link I keep for when I have reference troubles. I have trouble deciphering parts of it, but what it does do is remind me to always use Data::Dumper when I can't figure something out.

A few years ago, I would probably have sat for hours putting slashes and curly braces on and around everything without understanding what I was doing. (Who am I kidding? That's exactly what I did.) Now I let Data::Dumper do the heavy lifting for me.