Planning your first trip to South Korea can feel exciting—and a little overwhelming.

Do you need cash? Will your American credit card work? How do you get from Incheon Airport to Seoul? Should you buy a T-money card? Can you use Google Maps? How do you ride the subway or KTX? And how difficult is it to get around if you don’t speak Korean?

The good news is that South Korea is one of the easiest countries in Asia to travel around once you understand a few basics.

This guide covers the most important things American travelers should know before their first trip to Korea.