I once spent a good few hours in a Half-Life 2 session reading what each and every convar and command did (and changing most of them) just so I would know how to do it. I try and learn all the console commands, all the INI settings and what exactly all of this does. I’m the kind of guy that likes to know exactly how the engines of each game tick.
But there are a bunch of little tips and tricks you can learn to make the most out of the console, from bugfixes to becoming Courierzilla. Most of us use the console more than we’d care to admit. The Console, Or: How I Learned To Stop Worrying And Love The Actor Value.