Aran job instructor

there's not really a "job instructor" per se. The idea behind Aran is that you were once a powerful warrior, but your power wained while you were frozen, and you lost your memory, causing you to forget your skills. You'll do quests over time which lead you to remember your skills. I suppose you could say that Lilin is it, but also Maha (the "mind" of your polearm) and a guy in Lith Harbor help to guide you through your quest to regain your abilities.