***WORK IN PROGRESS***
Ill be writing a more in-depth guide for every instance.
Searched for this kind of thread, but didnt find any, should perhaps have searched more but here goes.
I found a easy way to make money, which is quite obvious and i am prepared to take the flaming.
Basically get some friends together(who know how to play their class and will dish out some nice dmg). After that you just go to random heroics and start farming(make sure you have an enchanter in the group).
Our comp was a holy paladin, 2 fury warriors 1 enha shaman and 1 hunter, we cleared every heroic in like 10-20 mins.
As you save so much time with the new LFG system(and not to mention the extra badges) i found myself getting from 500g-1500g an hour(depening how lucky we were with loot and rolling).
Things to think about:
-Try and do this early morning or late evening(to skip the additional instances crap)
-If you decide to do it when the additional instances crap is up use the macro: /run LFGTeleport(IsInLFGDungeon()) (taken from blizz forums, not here)
-Buy the gems which cost 10 emblems as you will earn more on it. I found the orange ones(ametrine) selling best. Thou the purple ones should sell good aswell.
You can sell them raw, or you can get someone to cut the: deadly, potent, reckless, inscribed or the luminous ametrine. Obviously take the one which sells the best on your server.
-Minimize downtime, dont let people go afk all the time.
-Try and get a good composition together, will make your heroics faster and therefor more money.
Well, if you have any suggestions or tips on how to improve this feel free to post.
Also its kinda obvious, but some people might find it helpful.