Like many things in the world of capitalism, this plan starts out with incurring debt. Your time to screw them all over will come - but not today. This keeps you in everyone's good graces at the cost of a small renown hit. This means telling the Stark men you don't want to get involved and not going to pick up the raven that was shot down. How to start The Five Kings can go screw themselves, so decline to get involved in their schemes in the opening missions. However, I still recommend increasing your Trade Skill to at least 3 to make this guide viable.
So this guide is set to go over the broad strokes of trading in the beginning - without going into specifics of character creation so as to apply to as many characters as possible.
I love trading in the game for RP Campaign - little backroom deals and coins hitting the right hands to make sure my trading empire comes out on top and anyone who doesn't like me ends up having a bad time. Mainly making a post for my own reference, although I'd appreciate any input/feedback relating to this - or what I could improve.