if you are using gold, make sure to switch to platinum! my advise is only use gold when buying from gold shops! switch to platinum for everything else! I also recommend clicking trees and rocks in towns1 (found under the world tab). you can get from 0-9p (or 0-9g if your using gold, so make sure to switch to platinum!) per tree/rock! or you can pick up trash, flowers and bugs. bugs can be used to make ink as well.
#1 advice: Dumpster Dive!!! you can sell what you don't need. lol