If possible, avoid purchasing Gear from the Auction House - Ideally, you should be able to achieve level 60 without buying anything from the Auction House. This way you will save Gold, but possibly make leveling a bit harder for yourself. If you badly require an Item upgrade, and the suitable Item is available on the Auction House for a low enough price - buy it, but only if you think that the investment will pay for itself in one way or another (the main exceptions to the Auction House ban Rule are Weapons and Wands, as they make leveling much faster, and pay for themselves by allowing you to chain-kill more mobs without Eating and Drinking, which saves Gold and time).
Create a Bank Alt and level it up to level 5 - The leveling part is very important because you can pick up Enchanting after you reach it. In Classic, you can disenchant EVERY uncommon item of every level, if you have the enchanting profession. Disenchanting weak BoE Uncommon Items and selling Enchanting Materials on AH will help you make some extra money out of otherwise Vendor-destined gear. The Bank Alt will also serve as your high-capacity storage for various items* that are bound to rise in value over time or might come in handy at a later date. Overall, this is a must-have, as it will improve your overall leveling and Gold-making efficiency, let you store additional items, allow you to consolidate your Gold on a single character, and provide you with a way of squeezing some extra Gold out of various Items.
There are more passive methods to gain wow classic gold, but these are slower. For example, many people choose to fish in places like Tanaris, or kill Harpies in Feralas and loot items such as mageweaves. These are rather AFK-able, but again, not as rewarding. Some people choose to favour fun over anything, and like in any MMO (massively multiplayer online game), the best way to have fun is playing games with friends or your guild. Dungeon runs with your friends provide social interaction and are definitely helpful over the long-term for your gold stack!
Find a Mage-Friend - The other things that get very expensive over time are Food and Drinks. At levels 1-40 you will most likely spend more than 15 Gold on them in total, and that is 15% of a level 40 Mount! To save at least a portion of this money, you should ask Mages if they can Conjure Food and Drink for you in exchange for a Small tip or favor. Remember that Conjured items disappear if you are offline for longer than 15 minutes.
Swamp Jaguars - Western part of the Swamp of Sorrows is inhabited by deadly feline species, the Swamp Jaguar. These big cats drop a lot of Vendor Trash Items (Long Soft Tail and Bristly Whisker), Large Fangs (used in Leatherworking, Blacksmithing, and Alchemy Recipes), Wicked Claws (used in Leatherworking and Blacksmithing Recipes), 12 Slot Bags, and most importantly can be Skinned for Heavy Leather and Thick Leather (Skinning is not necessary for this spot, because of Jaguar's already great loot table). This is one of the best spots for farming your Level 40 Mount Gold. Recommended level - 35+ (you might need to clear other Swamp creatures as well, just to be safe).
Some players choose to take a slightly alternative approach to their gold farming. This approach can take an extensive amount of time and dedication. Many people choose to train a ton of alts, solely for the purpose of making money and multi-tasking. In World of Warcraft Classic, professions are usually paired together. For example, if you’re training alchemy, you will need herbs to create consumables (e.g. flasks) that are used for raiding. An intelligent and observant player could seize this knowledge by creating one alchemy alt and one herbalism alt, swapping items as needed between each other. This fully mitigates the fees by the Auction House, which means your profit is maximised. Another complimentary combination you can use is skinning and tailoring, or cooking and fishing.
That's not to say that everyone has an unrealistic vision of what vanilla WoW was like. There were already plenty of people on the WoW Classic forums pointing out that perceived bugs are just recreations of the original game. And as noted before, a flaw to one player is a key component of the original positive experience to another. WoW Classic will surely please plenty of purists in spades. But this goes to show that it won't be for everyone who has fond memories of the game circa 2006.
The third location and the last is in the Badlands. And another Whelpling spot, this time in the north-eastern part of badlands. Home to the Scalding Whelp with levels between 41 and 43, hp between 1500 and 1700 hundred and around 1800 armor.. which makes it one of the most balanced spots to grind for exp and gold. Skinning is pretty much required here to get the most out of this spot. During the 2 levels I grinded here made around 150 gold not counting the epic drop Ardent custodian. Most of the gold came from selling heavy and thick leather, small flame sacks, the grey items and lots of greens including plate items that sell pretty decent on the auction house...
I made some route changes to the Horde levels 43-44 sections. I have swapped 44 Dustwallow Marsh with 44 Desolace (the entire sections). This allowed me to do Deadmire (at lvl 43 instead of 38) and then go stop at TB to turn in Deadmire + The Black Shield at the same time, then fly quickly to do the Desolace stuff. Doing 44 Desolace is now mandatory because I think its faster with the new routes. This will also make the level 53 grind much shorter. I think these were great changes.
This Shadow Talent Build is the fastest for Leveling Up a Priest Class from 1-60 in WoW Classic patch 1.12. Spamming Shadow Damage DOTs while kite mobs will be the name of the game with this build, having the ability to sustain your health is just a bonus. You will just need to make sure you are stacking enough spirit so you don’t run out of mana often as that will slow down the levelling process drastically.