The Mercenary class is normally the first choice of newer players.  These hack and slash characters are easy to level and don't require much money to raise.  Being basically just click and wait, they make it easier to learn the game's mechanics.  There are many types of Mercenaries:  Those going for Blade as their second job would go mostly for Dexterity.  If you see someone who is nothing more than a blur as they hack away, then most likely you have just encountered a Blade.  those going forKnight would place most of their points into Stamina.  The Knight class is what most players fondly refer to when they speak of the human meat shield.  These guys can really withstand some heavy hits.