Don't slip on the Big Slick!
There are a lot of new players on this site, which is great! I consider myself to be somewhere between novice and intermediate, having played online on an almost-daily basis for over a year now. I have a country mile to go before I will strike fear into anyone's heart at the poker table, but I've picked up a few basic tools.
One of them is this: AK IS RARELY AN ALL-IN HAND PRE-FLOP!
I see players overvaluing AK all the time and paying the price for it. Despite the high ranking of each card, it does NOT represent a pair. It loses to deuces. Without help, it's rags. BIG rags, granted, but rags nonetheless. If you pick up no help on the flop, MUCK IT! Learning how to toss AK after the flop is one of the hardest, but most important, disciplines a new player can acquire.