Shaman being one of the less commonly played classes of World of Warcraft, it can be difficult to find good information on how to do various things. This post will discuss the ins and outs of shaman gold farming. We'll be using an Elemental spec for this; the incredibly high opening burst an elemental shaman is capable of makes it very easy to burn down mobs in no time at all.
First, lets get a workable spec. Something like this should do quite nicely : http://www.wowhead.com/?talent#hihVqcdhtGf0Ao0xgco:MkIVcm
Once you have the spec, it's time for a cast order. Well, guess what? Shaman gold farming as Elemental is almost insultingly easy.
3.Lightning Bolt until enemy dies, maybe use a Frost Shock if the cooldown ends in time.
That's it. That's all you have to do. Just make sure to keep Water Shield up and Thunderstorm on cooldown to keep your mana supply healthy, and you'll be tearing through enemies like they're tissue paper. Don't bother with totems, they're a waste of mana when you're farming, and will often end up slowing you down.
Other than that, keep little things in mind; for example, running from mob to mob can be a waste of time. Use Ghost Wolf or your mount to get from mob to mob, depending on the distance required. Don't try to farm locations where you are constantly fighting for each and every mob; either find another location or come back later.
As you can tell, shaman gold farming is incredibly simple. Anyone looking to further optimize your gold earning abilities should check out my Gold Guide Review, where I compare various popular gold guides, and find one that sounds good.