Quite a while ago I reviewed Derek's Gold Guide, you can see my review of it here. Well the guide has been updated. These are only minor changes but do make these guide on of the best out there. Basically these guide is designed to help you grind and quest your way to getting tons of gold.
If you want to check the product page out. You can find it here. I've got a copy and it is amazing. I've collected tons of gold and you should be able to to.