when you reach Outland you will be fascinated by all the uber armour and weapons cmpared to the ones in Azeroth, but one thing that can get you thinking is how to get money. You might get say 200g in your first few hours in outland but to get a REALLY big amount of money there's one thing that beats em all and thats primal water grinding
The place that you grind these are in a little lake situated just North of Shattrath you will surely see it if you've travelled here before. there are eels in there called shimmerscale eels and they only have 3k of health! if you have a good spec for damage you will beat these guys up easily. depending on server the drop rate for the motes of water can be fairly good, alright or bad but im sure that most of the time it is good but if its bad find something to else to grind. Mote of water drops of these critters and 10 motes turn into a primal water which = 20g
so do the math
approx 5 primal waters in an hour = 100g
10 primals in 2 hours = 200g
do about an hour to 2 hours a day and you can be rich, and if your really desperate grind for the whole day!
i hope this guide helps