Updated - New Hunter Pet Family Tome, New Year Blizz Video Update: A way has been found to obtain the tome, but Blizzard have already clarified that it's unintended, and it's also making Hunters look pretty bad in PUGS as well! You can actually hearthstone out of the Zul encounter on heroic and if he dies later, you get the tome. However, muffinus had this to say about it: World of Warcraft WoW Dec 22, 2018 at 20:37 by Starym 3 comments
Most classes in World of Warcraft start at first level, but Death Knights and Demon Hunters are exceptions. They start at level 55 and 98, respectively. This alone can shave a huge chunk of time from your leveling experience. Of course, it only works if you want to play a Death Knight or Demon Hunter, but they’re both solid classics that can dish out damage or tank in a group.
While enchanting is generally considered expensive to level, you can make a profit with it as soon as you start disenchanting for profit. It is not unlikely that almost any green item in this case will have a buyout price for a lot less than the materials it disenchants into. Likewise, it is lucrative to check the auction house for green items with unpopular suffixes, such as "of the Gorilla," with low starting bids.
For those interested in more details on spending wisely, and generating good cashflow, we cover a number of topics in more detail. Please note that this guide represents the accumulated wisdom of many people. You don't necessarily have to do all of these things--there is no one "right" way to make and manage money. However, these pointers will give you ideas on how to establish a firm financial foundation for your character.
Any item with a grey name is considered vendor trash or poor quality. White items have some use such as tradeskills, spell reagents or reputation raisers, so you may want to check to see if they're worth more than the vendor price. Keep your eyes out for regular quality weapons, as even the worst of these tend to sell for several silver, or several gold at high level. Always check the tooltip for the vendor price before discarding anything. Also, white (or even grey) shoulder armor under level 20 sells regularly on the auction house, mainly because there is nothing better available at that level.
Alchemy is a crafting profession that can create potions and flasks, as well as some trinkets and mounts. The primary materials used are herbs. For potions and flasks only the Legion crafts have substantial demand as they are the only items that give meaningful performance increases at max level. Old world alchemy recipes that are profitable include Vial of the sands and transmutes.
Awesome trick really.  In this farm we'll be taking advantage of game mechanics to exploit a way into getting more defias loot drops.  The defias leggings and gloves have respective selling prices of 3,000g and 14,000g and only drop from 1 mob in the instance a staggering 1% of the time.  But do not fret, we can get the upper hand on this.  Much like past drop-combat farms, if you kill just one of the two defias overseer's in the instance, THEN drop combat, the one you killed will instantly respawn.  The trick here is to bring a character that can consistently drop combat and score many more kills than the average farmer.  To date, a hunter is best – with night elf being slightly better because of shadowmeld.  You can also bring potions of invisibility to boost the effect.  Anyway, while the average farmer only gets 1 shot to get these super rare xmogs, with this method you can get up to 40 chances in an hour.  Seems fair right?
I like to spend as little time as possible on transmog. 1-3 hours of farming a week is about all I can stomach, and I can stomach even less of it on the auction house. When you've got a thousand items listed, cancel scans get ridiculous. As transmog is best taken as a method of making passive gold over time, with little pockets of effort thrown in, do not waste your time undercutting constantly. Instead, adopt an approach that allows you to just post once or twice a day.
Hands. Down. The. Best. Whelping. Spot. Ever.  There are soo many spawns, and too many whelpings.  This spot is very close to becoming an infinite farm.  You just cant run out of targets to hit in such a confined area.  Each whelping has an 0.09 chance to drop a dark whelping – which may seem small until you realize you can easily down 40 whelps in a minute.  And by the time you finish, they will respawn.  The farm takes place at the ruins of Kargath in badlands and is usually empty.  Noone seems to visit this spot, probably because its more hit-or-miss than direct gold.  If luck finds you, you can walk away with a popular pet that's worth a pretty 14,000g

If i start on a new realms, I am farming a lot of transmog from classic and Burning Crusade Dungeons and Raids. In the beginning, i start to post them if they have at least a DBRegionMarketAvg (Average value of an item on all EU realms of the last 14 days) of 500 Gold. All the other items get vendored. The time you hit a stock of 1000 Items, my value treshold raises to around 2.500 Gold. All the items below that value get vendored aswell. Newly farmed items that are above these treshold will be listed. Why? If I start over somewhere, I want to get a certain amount of gold quickly. Cheap items are great for that. Later on, to save time, Quality is better than quantity. As mentioned above, re-posting the items on the auction house takes quite a bit of time. At this point, I can recommend you the TradeSkillMaster AddOn, it makes your auction house work really a hell of a lot easier.