Korean etiquette?

Question

if an adult says stuff like...

"oh your so pretty/cute~" or "i heard you were very smart",

what am i supposed to say to that without being rude or arrogant?

(Also, is there a site where they teach you these stuff?)

Answer 1

Say "Thank you!"

Answer 2

if someone compliments you, you say thank you

Answer 3

say thank you and bow your head.

Answer 4

I guess you could tell em thanks and your trying hard at whatever your doing.