Just a heads up before you get too invested into this game:
1) It's managed by Nexon, which means zero customer support. I logged in a couple weeks ago after taking a year break, and all my characters were deleted because my account was flagged as 'inactive'. And don't bother contacting customer support, because they won't respond, ever. Account hacked? Characters gone? Items lost? Kiss it good-bye.
2) The difficulty skyrockets around level 40, so quests by and large become completely unsoloable. You are highly "encouraged" to buy boosters from the shop to keep enchanting your gear and buy the super potions. Almost positive this is intentional design, because many people by this point are too invested in the game to quit, and pay money to keep going.
Bottom line: it's fun for a while, but don't make the mistake I did of getting heavily invested in the game.