Hello!
this topic is to help the members who want to do trades with jobs, its really simple but not so easy... You need take the quest with NPC (in jangan if you are chinese or in Constantinopla if you are European), than when you get job level 70 you will be able to do trades.
It's just a small summary, if you need more information you can post your questions here.
I don't have much time to write now, so maybe later i can try make it complete. (If anyone wants to help I thank)
See you in game!