In World of Warcraft, gold is important. Without it, you're really nothing but a skill bar and another name with no mount. You need money to buy skills, items, armor, and so much more so read this guide to figure out how to get richer!
Choose gathering professions. These allow you to collect the materials ("mats") that other players use to make items. The best professions to harvest these mats are skinning, herbalism, mining and enchanting (for disenchanting). Make sure to also pick up fishing and cooking which do not count against your two-profession limit. Maybe once you level up your skills, drop a profession and take up blacksmithing, leatherworking, or jewel crafting and create some stuff! However, gathering professions rule all, although a lot of money can be made through trade professions, gathering profs. still remain the key to many of the rich players' success.
Go to the Outlands/Northrend. Because of the enormous costs for flying mounts, Blizzard designed this Burning Crusade world to make you a lot more gold than you can get from Azeroth. However, at this point it may be better to simply stay in Azeroth until you hit level 60 because Blizzard recently upgraded quest money and exp rewards in Azeroth. Once in the Outlands, make sure to begin farming elemental motes. These are used to create primal which are required for Burning Crusade crafting and people pay enormous sums for them on the auction house. The same applies for Northrend, where Eternals will go for a higher price due to people's laziness.
Get better gear. Instead of completing every quest you can while in Outlands/Northrend/Cataclysm/Pandaria leveling up, run instances to get better gear, a decent amount of money and save the quests for when you are at level 90 when most quests instead of giving a 2 gold reward will give as much as 23 gold per quest. This is very profitable if you have not completed quests in the higher level zones as you can make close to 3000 gold per zone.
Get the add-on "Auctioneer." This can automatically tell you the best price to sell anything at the Auction House. Then run instances, collecting greed loot and sell them at the auction house. You will find that things like shadow gem and malachite can sell for up to 3 gold each for rich characters who need items quickly.
Play the Auction House. One of the greatest ways to make gold is to simply work the Auction House. Generally, you always go by the principle "buy low, sell high," but it sometimes takes a bit more than that. You'll need to research what items sell well, what time of day/week they sell the highest, and just how much of an item your server has in stock. Generally, you'll want to invest in trade items. Alternatively, some of the best items to flip for profit on the Auction House are TCG mounts. There are addons that can assist you in your endeavors, such as Tycoon and Tradeskillmaster.
Do Level mining. Then jewel crafting. Then fishing. JC isn't that profitable at first, but once you have a ton of JC cuts from doing JC dailies or prospecting titanium ore the money just rolls in, cutting for tips in trade or buying uncut gems from excess triumphs or since 4.0.1 justice points, the cash just rolls in. Fishing- once you have leveled fishing to 450, find a secluded spot in wintergrasp, and just fish away, all the fish you get, is used for Fish Feast. Sometimes sculpin, and salmon sell for up to 70g a stack at times. Another great way to make dough off fish is dragonfin, those almost always sell at 50g a stack too depending on your server.
Sell high level gear. Max level players are always in the market to improve their item level through the use of crafted gear, which is sometimes easier to get, and has better stats than those of raid gear (especially LFR). Advertising in trade can give you quick money.
The best way really is gathering professions.
Mining and Skinning being the two that sell for the most in gold per unit (usually on my realm anyways) and Herbalism being one that sells for less per unit but you can sell alot more of it at a time.
If you don't want to do that I recommend running Firelands, Dragonsoul, Icecrown and if you don't wanna do that I'd recommend the MoP Dungeons too.
: Realizing I made a mistake there.
Honestly, the best way to make gold, is to do the quest lines, especially in the WoD expansion. I've made gold hand over fist doing that, and have also been keeping to the standard which is to pick up everything, vendor the grays, check the greens for transmog rares, AH the rest if you can. You can also farm raids from older expansions, or farm materials to sell on the AH. Personally, I've never managed to get above 2k an hour farming, but then again, I don't use a hundred different addons or anything third party automation software to tirelessly farm while I'm sleeping or out on the town.
There are dozens of gold guides out there, even if most of them aren't accurate at this point. You always have an off chance to get a drop for a rare mount or something as well that could boost your numbers.
With subscription tokens , purchasable with gold, coming to WoW, people with enough in-game gold income might get away with not paying any real money to keep their account active. So why not go through a bunch of methods on how to make a small fortune in Warlords of Draenor? They might come in handy soon.
Bellular collected ten really good ways in his recent video, without going deep into flipping the Auction House with dozens of characters or doing shady stuff. These are all basically combinations of finding the best solo content and using professions efficiently.
Here's a short breakdown of all the methods shown in the video:
So as you can see, making a lot gold in WoW is really easy nowadays, much easier then, say, two expansions earlier, and while you can spend it all on rare mounts, transmog items or pets, it's probably wise to save it till tokens are finally in the game.