Generally you stock up on drugs at the drug labs (like fill a freelancer) then fly it out and sell it. If it doesnt glitch you can make like 30k and you can do it 3-4 times an hour if you are quick and dont run into anyone. It's not real balanced yet (have not played 3.7 so it might be different.)

This citizen con has got me excited for this upcoming year. 3.8 just went to evocati for testing so it is on track for a mid december release. 3.8 contains SSOCS (server side object container streaming) which means multiple systems will be possible as the server streams in and out content. Right now they are at the limit for planets / bases. To add anything new they have to remove something. But once they get SSOCS they can just add and add and add. Going to be a good year if they can get it running properly.