How to Play TriadCity
The TriadCity Players' Guide
Economics: making a living
While these are the preferred and most remunerative income sources, petty commodity trade does exist. Many NPC merchants will buy items which you find, or steal, or plunder. An auction system allows you to sell to other players, who may be willing to pay more for hard-to-find items than many NPC merchants. Simply exploring and finding things to sell can provide a livable income for lower-level characters.
At the time of this writing, petty commodity production outside of Roles is not available in TriadCity. So, you can't simply whack a hillside with a pick for hours on end hoping to find gold ingots, which someone else can then smelter, and etc. And, you can't - yet - hire or indenture yourself to an employer. The latter will probably arrive when the game world is large enough. Not too sure about the former.
Note to newbies: small sums of coinage are simply lying around. Look inside of couches, under bushes, inside rusty old tin cans. Sometimes they're just sitting on the floor. These are small sums, but they'll get you going. Larger stocks of coins are inside treasure chests and other likely places throughout the game world. As your character grows, you'll find more and more of these.