Hey there! With the increasing interest in South Korea as a vacation destination, I figured I could provide some advices from a tourist and resident perspective, having been in both sides of it now. I will try to update this often as more things pop to my mind that can help out your experience be even better, as well as the resident's experience when meeting foreigners. Arrival - Incheon International Airport is one of the best and safest airports in the world. I guarantee you, the experience itself within the airport will be a whole different world than you expected; there are cinemas, restaurants, an ice skate ring, and so much more! transportation inside the airport to reach each terminal is excellent and the staff as a whole will make you feel right at home. Having been in this airport for 4 trips already it has never disappointed, the one thing I don't recommend is exchanging cash in it, other than a minimum required to get around. - If you're staying in Seoul I will recommend you to stay in Hongdae, there are plenty of hostels of good quality and enough foreigns to not feel lonely if you're the kind that doesn't want to be a minority. For the ones that like quiet surroundings with still a decent amount of people, and prefer to head to the more crowded areas later, I recommend you find hostels around the subway exit #3, however if you are the opposite you will want to stay around subway exit #9 (the most crowded area and some of the best nightlife in Seoul). - Subway will be your lord and savior of transport. Depending where you come from this will be a huge shock, but a lot of the directions are referenced with subway station exits. Seoul's subway system is a big deal and it's the most efficient way to get around Seoul, even more so than renting a car. - Head to Myeongdong (명동) after you've left your things at the hostel of your choice. Now if you've ever been to Hong Kong this place is quite similar, there are a lot of Chinese shopping and a lot of vendors on the streets. It isn't an intrusive experience that you'll be faced with, most clerks are nice and they're just trying to get their job done. The main reason you will go to Myeongdong is for money exchange, they've got the best rates in Korea, and you will want to exchange any cash you've got in there. Nearby you've got some cheap restaurants that you can fill your stomach with, they're literally a couple of steps close! Korea is not just Seoul - To put in contrast your experience in Seoul and find some more of the beautiful Korea without having to deal with the crowded metropolis that is Seoul, you should head to some other places known to have a lot of cultural and gastronomical value (food is a great incentive, I know this much!). - Sokcho is an amazing place for those looking to do some climbing/hiking in one of the most beautiful mountains in Asia, Mt. Seorak. Sokcho is located towards the north of South Korea so you will find the whole place tends to be a little bit more chilly than Seoul, that comes with it's benefits though, the sea-food is waaay cheaper than the one you will find in Seoul (I'm talking 300% decrease in price), not to mention the quality is incredible. Don't fear the locals, but don't pester them either - You will meet both, shy and outgoing Koreans, there is a misconception that the average Korean will hate you because they're nationalist. The average Korean is curious, has a kind heart, and usually just doesn't care about others outside their small circle of trust and friendship. Now this doesn't mean a Korean won't be willing to help you out if you're having trouble finding a place or ordering a meal, quite the contrary they'll be GLAD to help you out, however do not expect them to go out of their way and provide you help unless you request it. Most of the time I see tourists that find shy Koreans cute and keep on harassing them over it (yeah, it is called harassment) just to get reactions, this is possibly the worst thing you can do and an easy way for people to not only feel uncomfortable real quick, but get some well deserved hate from residents. - A lot of Koreans will understand English to certain extent, but if you're going to a foreign country that speaks a different language please have some respect and learn some words that will come useful (for your own safety too), it doesn't matter if you write them down or learn them, but actually do something about it. I have seen people who cannot eat certain meats because of their religion, which is completely fine, until you realize it's your own fault if they serve you any (due to miscommunication) as Korea is the country with the most meat consumption in Asia..