Given it's your first character, don't farm. Level up, enjoy the game. go full STR with bicheon and cold. Raise your lightning to 15 and leave it there.
Level up until you hit maybe lv 30. You will by then learn a bit about the game and the different classes. You will be able to decide on a build then.
To learn more about each class and it's strengths and weaknesses, read the stickied guides in this section.
Good luck
