1) Ranking helps you. Pay attention on how much copper/silver you get each mob. Those levels 1-10 can give you a good 6-10 gold.
<br>2) Pick up things and sell them. Magic items are the best, since mage shoppies in general get the most trafic.
<br>3) Find hidden pickup stashes. There is something like 400 copper in a pickup stash on an area you will likely visit very frequently. Sure, one pop is not much, but if you make it a habbit to plunder every time you roll past, it adds up.
<br>4) Remember to use barter for heals. This saves up a bunch.
<br>5) If you find mobs with some good cash, also make it a habbit to grab it when close. Does not need to be many gold pieces, just some hundreds easily add up.