What should I do if I just spilled coffee on my laptop?

The liquid may not yet have penetrated. Here are step-by-step instructions.

If you have a vacuum cleaner that blows air out the opposite end, then reverse the hose and blow dry you keyboard. you need warm, blowing air to dry the keyboard asap. no vacuum cleaner? then use a hairdryer on the medium setting.

This is a little late, maybe, but I did this when I spilled tea onto my laptop.
As soon as I realized what happened I flipped it on its side and most of the tea poured out from the keys. I was young enough to go to my parents (since it was kind of theirs… and they both work with computers.)
We forced it off with the power key, had it on its side to keep draining any risidual, and then very carefully and cautiously exposed the back part of the computer, plastic off, to a fan on low settings. It’s the inside that you need to worry most about getting wet, but it’s also the inside that’s most fragile in being exposed to things. We didn’t touch it or bump it, and had it set up in a safe, stable place.

Then we did what @marinelife‘s article did. We waited. But since my parents were a little paranoid, we waited for a day (a day while the rest of the family was not so happy with me) before we tried our moment of truth.

It turned on just fine, too.

The worst that happened was that the sugar (young enough to still need sugar in tea) had kinda crystalized under some keys we had to press extra hard for a while. That, and the rest of the family to this day doesn’t trust me with drinks around computers… hehe.

Unplug it, take the battery out, turn it upside down on top of a towel. After a couple of days see if it works. If it does, cool If it doesn’t, well, you know the drill.

Thanks all! I had it flipped w/o the battery for a few hours and it came back to life. Been alive for a while no, so looks like its good. Thanks everyone for their help.

Now… time to invent an anti-spilling cup.

use hairdryer to dry the wet places.