If you bought Legion and have no desire to go through old content, good news! The new expansion comes with a free boost to level 100 for one character. You can buy these boosts from the in-game store whenever you want, but they normally cost $60, so savor this free one. Use it for a class that you are confident you will enjoy. As a fresh level 100 character, you will be able to immediately begin the quest that takes you the Broken Isles, the new region where Legion takes place.
As for the classes themselves, they almost all play like slower and slightly less interesting versions of their Legion counterparts. This is thanks in large part to the loss of one ability from each class that came along with Legion’s own AP dumping system: the artifact weapon, which added a unique ability to every spec in the game. The loss of these abilities left most classes feeling frustrating and incomplete, and though Azerite gear was supposed to be the replacement, it missed the mark completely. There will always be one Azerite trait that reigns supreme for each spec, meaning that the frustration of that particular loop will be unavoidable as long as the system is in the game.
The other addons are a great addition to the repertoire of the gold maker. Some add percentages and buying lists, while others provide price and revenue graphs to the reader. Chatter even allows you to repeat those WTS messages without sifting through pointless gossip and chatter. The in-depth workings of them will come later, as for now, more basic setup needs to be covered first.
Chilled to the Bone, Dampened Magic, Kleptomania, Netherwind Armor, Prismatic Cloak, and Temporal Shield have limited use in PvE content in terms of increasing your damage in the open world, but they can be situationally useful. Notably Temporal Shield can be utilized for, functionally, an extra 6 seconds of combat time against large elite mobs.
The expansion is set immediately after the events of Legion. Two continents have been added within the Great Sea between the Eastern Kingdoms and Kalimdor: Kul Tiras, one of the major human kingdoms, and Zandalar, the homeland of Azeroth's trolls. While the Alliance and Horde will initially travel to one continent respectively, both continents will be available to both factions at level 120.
A common mistake of new players is to upgrade their gear at every opportunity, paying for a new piece even if it will only add one or two new stat points over an existing item. Likewise, investing in headgear, neckwear, trinkets, and rings at the earliest available levels can also consume valuable cash. While it might seem foolish to leave an available slot empty, you will eventually find something to fill it. Blizzard will see to it via the quest rewards you'll get along the way. In the mean time, the 1 or more you save will serve you well if you invest it wisely. The bottom line is that one can easily level all the way to the maximum relying on just quest/drop greens. The gear you get from regular questing can help you perform well in dungeons, which gets you even better equipment.
Now, on the other part of the equation, the items that return materials on mission finished are overlooked. Looking at this Wowhead comment https://www.wowhead.com/item=162114/crimson-ink-well#comments:id=2607578 the most lucrative ones are the disenchanting rod (returns enchanting mats, best case scenario, 10x veiled crystals) and the magnetic mining pick (returns ores, up to 40x Stormsilver). This is totally server dependant, but you will need to check which ones are worth where you play.
While this is more a method than a farm, I still thought it belonged in this video. This method takes advantage of the long forgotten spell, void shatter. Generally because of the logistics behind how easily obtainable void crystals are when compared to large prismatic shards, void crystals cost SUBSTANTIALLY less. The void shatter spell however turns 1 void crystal into 2 large prismatic shards. Globally large prismatic shards are worth 15g a piece, while void crystals trend around 2-4g a piece. Can you do the math on that? You can literally triple your investment cost by creating more prismatic shards for your market. All it requires is for you to get honored with the shattered sun offensive, a little known fact that most enchanters are too lazy to take advantage of. Nobody is doing this, and on most servers the market it ripe to take over. Don't believe me? Check it out yourself!