After playing at Rappelz for more than 3 years, the only useful advice i can give you is to enjoy the game, make it your own way to waste your time, make friends, who cares ? It's your right to enjoy the game. Battle Summoner, Deadeye, Corrupter .. What a large choice ! And the pet system is what makes this game one of the greatest ever. The Death Tyrant with his spear, the Orc with his axe, the blue pixie with her healing skills, and we should not forget the three greatest pets ever : Pantera, Tortus, Poultry !
Enjoy the game, forget the rest.