唔駛客氣^^/

감사합니다 ! Thanks!

1. You can say both greetings for "How are you?", but both are different in meaning and usage. "어떻게 지내세요" is more like "(最近)您过得怎么样?", and "처음 뵙겠습니다" is closer to "初次见面".^^/ 2. Yes, you're correct, and we've got more.^^/ 만나서 반갑습니다(formal, polite) 만나서 반가워요(informal, still polite a bit) 반가워요(almost the same as "만나서 반가워요") (만나서) 반가워(informal, often used among close friends) 반갑다(quite casual) \^o^/