Each of those modes existed long before this latest expansion; raiding is a basic concept in MMOs, and Mythic+ was added in World of Warcraft’s last expansion. The problems with Battle for Azeroth’s endgame come from the systems it adds, which most often artificially gate progress where most of the fun can be found. If raids and Mythic+ are the carrot, we’re about to talk about the stick.
Honestly TL:DR of any guide. Is learn your markets, it's as simple as that. Learn who's in it, learn what's profitable, watch different time tables. I've earned 2 million profit OFF 1 market and half set up TSM. I've barely tried before this I was a hardcore raider, only made gold over the years through BOE farming and run sales (which are goood, don't get me wrong) but I want to be making the multiple gold capped characters.
So when you log in to the game, as soon as you cast a spell, you will experience some kind of lag. The movement doesn’t register with the database and thus the lag is experienced. You can observe this when you get DCed from the server and return back to the original position, unless you have traveled enough distance to be registered in the database.
Enchanting, Jewelcrafing and Alchemy are also good quality choices no matter what the expansion is because potions, elixirs, flasks they are always needed which made by Alchemists. Then we have enchanting pretty much the exact same thing with alchemy. There is no expansion where people would not need enchants. Then we have jewelcrafting once again same thing, stat gems which always go for a fair price in Auction House. Also this profession synergizes with mining and making good profit by only purchase and prospecting ores.
Thing is, as in real life, opportunity cost is the real key on this. I'm getting 2 tokens per month quite easily with just 3 toons (1 maxed only (yeah, pretty damn inefficient but I lack a lot of time to play :p)) just by flipping couple of things, food, flask, potions, bags, shirts (yeah, shirts!!), etc etc. Every damn penny/gold counts :p, just have to learn how your realm market works, what niches exist, which items are needed and undersupplied and which are oversupplied.
Making gold = work, people just want to be lazy and cash in but today a lot of people use TSM, have access to this reddit, youtube guides, etc. More and more people play wow to make gold so ofc the AH work gets harder, you just need to find your niche, i'm making gold with Tailoring from MoP and Cata for transmogs, not a lot of work to farm maths and i sell each piece around 10k, 7 pieces per week and i'm fine for a month.
The Escalation patch has introduced several new scenarios with respective heroic modes that provide shiny new loot. It is still too early to predict which of these will demand the highest prices at the auction house or AH, since it can take weeks for players to work through the content and determine the value of the new drops compared to the existing items. Many expect the rarest and most prized drops to start commanding handsome prices starting June, so just keep your eyes peeled for popular WTB requests in general chat and high-selling items at the AH.
Remember to NOT disenchant ALL of your quest rewards and drops. There is a new Blood of Sagaras in BfA called "Expulsion" and it is used in all primary tradeskills and it comes from using the Scrap-o-Matic 1000 (or Shred-Master Mk1) to break down the piece (explation below). In alchemy you can learn to transmute it (Transmute: Expulsom, which generates 5 Expulsom per day from 10 Akunda's Bite, 10 Winter's Kiss, and 3 Anchor Weed). So some pieces may get more explusion from them that they give dust/shards.
Although WoW currency can be found through quests, fallen enemies or the dreaded "farming" process, doing it the conventional way is time-consuming. Considering the upcoming release of the Legion expansion pack in August of 2016, stocking up on gold is more important than ever. This way, you can spend less time farming and more time buying everything you need to tackle the next set of challenges.
Eventually, the Alliance finishes its preparations and launches an attack on the Zadalari capital of Dazar'zalor, their goal being to sever the budding alliance between the Zandalari and the Horde by dismantling the Golden Fleet and capturing King Rastakhan. Despite Anduin and Jaina's desire to capture him alive, Rastakhan is overwhelmed by the power of his pact with the Loa Bwonsamdi, and the Alliance champions are forced to slay him. Enraged by Rastakhan's death, Horde champions launch a vicious counterattack on the withdrawing Alliance forces, which ends with both Jaina and High Tinkerer Mettatorque gravely wounded. As the Alliance leadership debates their next move, Sylvanas, infuriated by the Horde's defeat, resurrects Jaina's long dead brother Derek Proudmoore as a Forsaken, an act that horrifies the surviving Horde leaders, with the intent to use him as a sleeper agent to destroy the Proudmoore family from within.
Gathering (Mining, Herbing, Skinning, Fishing) – WoD almost totally killed gathering with the garrison but it made a big comeback for Legion. I don’t think BfA will be any different. Crafters always need materials and they will pay big bucks for it. While the crafting professions might have bigger profit margins, gathering has always seemed to produce a nice steady income. Materials always sell and usually sell fast. One thing I am watching for BfA is old materials. With the change to how you level professions, gone are the days of power leveling a new toons profs using only WoD mats. On one hand you won’t need to in order to do the BfA stuff. On the other hand if enough folks still like finishing off the prior xpac stuff, old material prices could go up and low level gathering might be more profitable similar to how Ghost Iron is now.
Azerite equipment is currently balanced around being able to unlock the outermost, earliest tier of power immediately upon acquisition, while delaying further advancement until the Heart has been further empowered. For example, the first piece of Azerite equipment, gained shortly after the Heart itself, is fully empowered once the Heart of Azeroth has reached level 3. A character at 120 (the maximum for the expansion) may find a piece whose first tier requires the Heart to have grown to level 12 or greater.
There's a few profession crafted pets in BfA on the horizon - Battle for Azeroth Tailoring is getting a Hot Air Balloon style pet, and BfA Alchemy looks to be getting a brand new Transmute Meat to Pet. There are some mount buff consumables from both BfA Leatherworking in the form of a mount barding, and Blacksmithing in Battle for Azeroth will be able to craft Stirrups and Hoofplates to increase mount speed and allow you to interact with things while mounted.