Once you figure out reading, ordering food, some important phrases, and make some friends, you'll notice the culture shock less and less.
I go through phases of acceptance/angry annoyance at the vast differences here regarding the lack of individuality. I'm in a more negative phase right now but i'm trying to remember what it was like to just love being in a country where the people are so different from people back home.
I guess my only help with culture shock is to realize that people in a society only really know what they've always been exposed to and the people in Korea, for the most part, seem to not value individuality and thinking outside the box (gross generalization, i know). Can be frustrating.