The menu seems confusing, or maybe I'm just drunk... but I cannot for the life of me find out how to get more of the tradeable resources. The ones at the very top of the screen that you send your ships off with. I've only sent off like 4-5 ships total, and I'm at a stopping point now because I have nothing left to send off!
~ The only difference between genius and stupidity is that genius has its limits. ~