5 months ago there was that terrible magnitude 9 quake that struck Japan. A few days ago, there was one in the US too. It's becoming really important to learn how to deal with that sudden force of mother nature.
The most important thing is to get away from falling objects. Lamps, dishes, maybe even refrigerators. When an earthquake occurs, the thing you should be doing is to get under a desk. (or anything that would protect you)
After the shaking ends, some say that you should turn off the gas. But that's only the case in a quake that didn't cause much damage. If your house is in a bad condition, leave it as quickly as possible.
And, I hope that this will never happen again, but still, watch out for malfunctioning nuclear reactors. The Japanese government didnt do a good job of reporting the news and evacuation from the site didn't go very quickly. I don't know about the other governments, but you should still be aware of this fact that nuclear reactors sometimes just can't withstand an earthquake.