Possessing the practical experience firsthand, I hope this write-up can support you to teach English to Korean students on the net and offline. https://kinitty.net/%EC%A3%BC%EB%A7%90%EC%9C%A0%ED%9D%A5%EC%95%8C%EB%B0%94-%EC%97%AC%EC%84%B1%EC%9D%84-%EC%9C%84%ED%95%9C-%EC%83%88%EB%A1%9C%EC%9A%B4-%EA%B8%B0%ED%9A%8C/