This video shows an overview of how to make gold with Engineering.
Addons: Auctioneer, Postal
I hope this guide will help you get rich in World of Warcraft but at the same time free up farm time so you can actually enjoy the game for what it is meant to be; fun! So, don't sit at your computer 24-7 just to make gold. Go out, raid, PvP, whatever, just make sure to have fun (^_^)v.
Special thanks to all my friends, supporters, Adobe, Blizzard, Fraps, and anyone I left out (^_^)v.