Anyone tries World of Warcraft?

I just downloaded world of warcraft. Unfortunately, I was lost (am I a digital native? I doubt). I was supposed to quest something, but I have no idea.
Now I understand what the "Digital Immigrant accent" is in Prensky's paper. I prefer to be told how to play the game.
OK, could anyone who has figured out how to play the game show me what I am supposed to do in the game? Or, we can discuss the game a little during the class.