You've got your startup gold, epic flying, and if need be a steady stream of gold through daily quests. It's not enough, you want more. The next step up the gold making ladder is the resource gatherer. These players pick up tradeskills like Herbalism, Mining, and less commonly Skinning and traverse the world picking up items that are useful to other tradeskills.
The difference between making good money gathering and making great money gathering is efficiency. You need to know where resource nodes spawn and have a 'path' that you use to navigate a zone. You're going to obviously need Northrend Epic Flying to move around quickly -- a 280% speed mount is great, a 310% mount is even better.
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