감사합니다 is one of the most commonly used Korean expressions. It's also one of the very first things most people will learn when they study Korean. But 감사합니다 isn't the only way to say "thank you," and doesn't work in every situation. Find out more about this phrase, and more phrases including 고맙습니다 and 도움(이) 되다 (literally, "to become help") in this second episode of "A Glass with Billy."
Check out the video below: