When In Rome, Do What The Romans Do

Whatever country you go to, you are bound to experience some culture shock. You're gonna have to deal with the cultural differences and may learn some things that you are not supposed to do.

So here are some Do's and Don't's in Korea. 

Do's:

• Do leave your shoes off when entering a place that don't allow shoes indoor. Some restaurants are supposed to be enter barefoot. A similar mistake I made to this was when I was at the jjimjilbang (public bathhouse) where I had to put on my shoes after getting out of the dressing room. It totally slipped my mind and I put on half my shoes before the lady that worked there told me I wasn't supposed to do that after I get out.
• Do always bow wherever you go. It shows politeness. Depending on the situation like a business meeting or parent meeting, the degree of your bow is important. In those situation, a 90 degree or further bow is good. It shoes great respect to those of higher status. When I was in Korea, I would do a quick bow and hello (안녕하세요) to show respect. Don't ever wave or give our handshakes first. Handshakes usually come after the bow, but if you're of high status then they usually initiate the handshake first.
• Do receive items, whether it be money or a glass of soju, with both hands. Another sign of respect. Usually with one hand under the other.
  

 Don'ts:

• Don't point at someone and call someone over with your palm facing up. This is considered a rude way of calling someone over. The reason they consider this rude is because it's the same way to call a dog or any other animal. 
• Don't take the first half of the seats of buses. Those seats are reserved for the elders and they have the ultimate power. You must respect the elders. But also reserved for the handicapped and pregnant women. Even if the bus is crowded, elders will  not be afraid to tell you to get off. This is the same for on subways. There are reserved seats for them so never sit there or you'll get a nasty look.
• Don't tip at restaurants. Korea doesn't tip. If you do tip, they might think you're looking down on them as pity or showing arrogance. So you save a little money by not tipping. No complaining there.
• Don't directly introduce yourself. Instead have someone who knows you introduce you. 
• Don't be the first person to eat at the dinner table. You must wait for the oldest person to take the first bite. As you may have guess, elders have the ultimate power and it's very strict. Never disrespect them or it'll be the end of you. 

Again, these are only a few examples of Do's and Don'ts in Korea. There are many, many more. If you're interested in going to Korea, you can look more into the culture and what's appropriate. I didn't experience much culture difference when I was there. So good luck and remember elders have the ultimate power!