Stuff I Routinely Forget How to Do

I need an internet connection to program well because I'm constantly looking up things I've forgotten. I figured I'd collect the useful bits into a growing list, in the hope that others may benefit from my documented forgetfulness.

It's really a letter of advice from Past Christina to Future Christina.

UPDATE: This list has been relocated here to make it a bit easier to update. Seems I forget a lot of stuff.