For this guide you need to be at least level 75. It is recommended to have engineering and MOLL-E.
Glyph for pick lock and pick pocket. Good talents to use are master of deception and camouflage.
The basics of this gold guide is that you do Lower blackrock spire and pick pocket mobs for lockboxes. These lockboxes are sold for the raventhold rep and usually 14g per lockbox on my server. You can make up to 30k gold in 40 hours using this method.
Here is a useful macro:
/console set targetnearestdistance 10
/targetenemy [target=target, noexists]
/cast pick pocket
Thanks for reading my guide, and I will have more guides up soon.