When you order dakgalbi, you order by portions, so if you are 3 people you can order 3 portions of it. It usually ranges from 7-10,000 won per person. They'll bring it out in this hot plate and they'll cook it in front of you over a burner built into the table. Here we've got the basics, spicy chicken, cabbage, green onions and some ddeok (rice cake).
Fry it all up together and it will look something like this. For an extra kick, try ordering cheese to go on top (though, not all restaurants will have it). The waiter will help you fry it, and tell you when it's ready to eat.
Once you're done with the chicken, it's time for some bokkumbap (fried rice). Order some rice (however many portions you need) and they'll fry it up for you, probably with some kimchi and kim (seaweed).
And that's about it. If you haven't tried it, I suggest you leave your house now and get it. I don't care what country you're in. Go. Now. Unless you're vegetarian.. in which case... I don't know what to tell you.