Greetings @haneul and welcome to steemit! 😁
I'm new to steemit too and learned a lot my 1st 6 days - I think my posts can answer some of your steemit questions.
For ex:
https://steemit.com/steemit/@ronmamita/i-m-concluding-my-week-on-steemit-and-here-is-what-i-ve-learned
Is a post meant to answer questions from new steemit members.
Wishing you a joyful steemit experience!
thank thank thank iam very happy