Be type and respectful, give credit score to the initial source of material, and try to find duplicates just before putting up. Find out more단순히 유튜브 영상을 즐겨찾기만 하셨다면, 이제 한 단계 업그레이드 해보세요.In Illustration : In my principal folder I've about 60 folders, Each individual one of these with PDF'