I have never had Dim Sum. I am going to San Francisco this weekend and plan to eat some Dim Sum in Chinatown. There are a million suggestions on where to eat; I've yet to pick a spot... But once I'm there, what do I eat? Is there etiquette? What's do they generally have at Dim Sum joints, what's good to start off with for my first go? I'm not particular about food; I'll eat anything (just about...).