Prof Yoons channel is really great especially for those who are studying at the Korean Cultural Centre, it has an amazing explanation for Sejong books. https://youtube.com/c/ProfYoonsKoreanLanguageClass 베이직 코리아 Basic Korean: Is my favourite channel for korean grammar because of the similar samples. https://www.youtube.com/channel/UC7t6mMJtdVEWsVEFF5XDFNQ