Three ways from Incheon Airport into Seoul, and which one fits your hotel: the AREX train (Express or All-stop), the airport limousine bus, or a taxi.

Google Maps does not give full walking or driving directions in Korea. Here is how to set up Naver Map and KakaoMap in English, search places, follow transit routes, and what data you need.

The T-money card is how you pay for buses, subways and many taxis across Korea. Where to buy it, how to top it up, where it works beyond Seoul, and how to get your balance back.