Heirlooms are special pieces of armor that level up with your character, so they have stats that are always respectable for your character’s level (up to level 110). Heirlooms that fit the head, shoulder, chest, legs, and back armor slot offer an experience bonus. The total bonus is 45 percent if you have them all. It’s also possible to acquire a ring that adds another 5 percent, but you must win a fishing contest acquire it, and that can take some time.
Profit is only created if you make sure your costs are less than your earnings. This is not so much an issue for gatherers who simply trade in some time and effort to gain their wares, but for production professions, this must be kept in mind. Many high-end items that sell well require materials that cannot be provided by the gathering profession normally paired with your production profession. To craft these items, purchasing the raw material from the AH or another player becomes necessary. You must keep record of how much you spent to obtain these materials, or else you may price the finished product inaccurately, either too low that you sell it at a loss, or too high that you can't sell it all.
Why don’t you go for a Guiness World Record? (The answer is that I applied for the World Record as Richest Player in World of Warcraft in November 2015 but they “do not invite proactive applications for records such as the one you are proposing” and suggested I go for “world’s longest Warcraft livestream” instead. Zzzzz no skill needed, no thank you!)

Buffs. Food/Flasks/Scrolls/Potions/Elixirs are a small, but noticeable, buff to your killing speed and survivability. If you have a max level character that can already supply you with cooking or alchemy, you'll be very well off, because the AH is a cesspool for this. I can't really give you specific foods or potions to look for, since each AH is going to have different supplies. Generally speaking, lower level foods are going to only last 15-20 minutes until you can buy the more powerful versions at 60+. Look for anything that adds versatility or your primary stat, and buy stacks for each level range(1-60/70/80/90/100).

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Level 120 comes and goes. Island Expeditions have unlocked, but it turns out they’re not much fun, and the most rewarding versions are only accessible to premade groups. You turn to Warfronts only to realize they’re not available this week. Fine. You can always grind out better gear. Except as you do, you notice your new gear has higher Azerite requirements than your old gear, which means your shiny new items have fewer unlocked traits than what they replaced. Discouraged, you decide to roll as one of the cool new Allied Races. Except you can’t because they’re all locked behind reputation grinds.
For your tank... I'm assuming you meant which race should you be, not which class, since you seem to want to be a warrior! Well, if you were Horde side I'd recommend Tauren for the health buff. But honestly, I *never* pick a race based on the racial features - only based on the flavor. If you are going Alliance side, I am quite partial to dwarf warriors myself but pick whatever seems most fun to you!

For reference, my previous best time abusing Method-0 in 7.3.5 was 32.4 hours(as show in the old thread). A difference of just over 8 hours; which isn't all that bad, all things considered. And I believe I made several errors along the way, which could be cleaned up in future runs. I believe that that gap could be significantly closed by using a monk's bonus, but I hate playing monk...so...yeah. YMMV

On my server there's a big shortage of Primal Air. I've tried farming it in the past using supposedly the best spot(s), but it was honestly horrible. After looking at the Wowhead for Primal Air I noticed there's actually a transmute recipe for Primal Water to Air. I will say as a warning that it apparently does have a 1 day CD like a lot of transmutes, so for some people it might not be worth the time. But at least on my server, there's not 1 Primal Air on the AH and I know that it's a constant shortage, so at the moment I could make a lot of profit just doing my daily CD for this after getting the recipe. To get the recipe you do have to be revered with the Cenarion Expedition from TBC, and there's guides on Wowhead for grinding out that rep as well. I'd recommend checking the stock of Primal Air on The Undermine Journal for your server, and if it's relatively low and you have at least 1 alchemist, go for it. It could be a decent way of making a little more passive gold, just transmuting one Primal to another. I'm probably actually gonna start rolling another alchemist at some point, and this discovery has definitely prodded me in that direction as doing this transmute won't interfere with other TBC transmutes, because there aren't default TBC transmutes as far as I'm aware.
The last farm on this list, actually I was surprised this farm eluded me for so long.  Generally speaking gnomergan is a huge confusing instance that takes some getting used to but if your a high value transmog farmer this does not scare you.  You can pull the entire instance and get access to a plethora of high value loot such a recipes, world drops, greens and even engineer supplies.  Overall this farm is shadowed by the Diremaul farm and Zulfarrak farm, but is an equal change of scenery with a wild card if you get the hot shot pilots gloves OR the mechbuilders overalls worth 400,000g and 60,000g respectively.  A pretty cool neat farm that noone really mentioned until now.
Changes were also made to levelling in earlier content with Legion's 7.3.5 patch. The level-scaling tech introduced in Legion not only be continued in the new continents of Kul Tiras and Zandalar, but was also be applied to content from prior expansions, allowing larger level brackets for lower level zones. Further, as previous expansions are now included in the base game, the level ranges for those expansions are now broadened, allowing players to spend more time leveling in preferred expansions and avoid others entirely. Some examples include a zone like Westfall having its level bracket (at 10–15 as of Legion) increased to 10–60, whilst continents such as Outland and Northrend sharing a 60–80 level bracket. The aim of this change is to encourage more player choice whilst levelling and to allow players to experience the full story of a particular zone without overlevelling the relevant quests.
 Lightforged draenei - "For untold millennia, the Army of the Light waged war against the Burning Legion throughout the Twisting Nether. The draenei most committed to their long crusade would undergo a ritual to become Lightforged, infusing their bodies with the very essence of the Holy Light. After finally achieving victory on Argus, the Lightforged Draenei have undertaken a new mission: protecting Azeroth from rising threats and helping the Alliance push back against Horde aggression."

The Heart of Azeroth is an artifact given to the player character from the world soul via Magni Bronzebeard. It is a necklace that can use the power of Azerite, the lifeblood of the embryonic titan Azeroth (See Plot, below). Azerite is similar in function to Legion's artifact power, in that it is gathered normally from playing the game and is used to upgrade an artifact; likewise, the Heart is similar in function to Legion's artifact weapons by having the capacity to be constantly upgraded. Unlike artifact weapons, however, the Heart is shared with all of the player's specializations and can empower all eligible pieces worn simultaneously.

The next step on the stairway to the gold cap is the internet. Often times, WoW players forget that various websites can have good information. However, many of them are dangerous and just filled with lies or exaggerations. It is my advice that you stick to three main websites: Wowhead.com, Worldofwarcraft.com, and Mmo-champion.com. On wowhead.com, one can see average prices overall on every sellable item currently in the game. This is a nice start; however, most servers have economies that differ greatly. I played on one server where a +healing red gem went for 100g and another where the same gem went for 55g. Swings like this are just the beginning. Random drop epics, especially those BoEs from newer content sometimes differ by thousands of gold! (Consider this fact especially if you are planning on transferring, as this can be the greatest gold mine in WoW). Worldofwarcraft.com provides a little known list containing the most common bought items on the auction house across every server in an aggregate sense! This means that they average every server before listing the results. Unlike wowhead.com, this presents the reader with a much more accurate portrayal of what they may expect on their own given server. Results will be slightly different, but this tool should not be overestimated.
The Horde 12-20 (Barrens + Stonetalon Mountains) guide has been rewritten and revamped.  In addition, there has been numerous tweaks to the speedrun route to make things faster and easier to follow.  Also, in case you haven't noticed I am now adding about 40% more info per step and redoing all the images.  Unlike with my previous vanilla guides, I am now giving a brief explanation of where to go and what to do with each step along with any other helpful tips.
To achieve reliably 200% success rate, you need 1 champion equipped with Vial of Ofuscation (counter stealth missions), and the others can equip the +10% increased success rate per troop (some champions, like Falstad/Rexxar already have this passive and will stack). You want to counter the cursed status (success rate wont go over 100%) but you can skip increased time and additional costs affixes since they dont really contribute to success rate. Overall I would say that you need 1 Vial, 3 10% per troop Horns and either one 10% increased chance or one reduced duration item (it counters first strike missions). Using this setup, you will raise dramaticly your success rate which in turn will give you more rewards, but you will burn War Resources since you want to send troops to raise the success rate and we dont counter the increased costs affix most of the time. Its hard to evaluate how many missions you need in order to make-up the costs of the champion equipment, but in the long term is going to be worth.

At Level 18, you unlock Freezing Trap which is a long-term crowd control for all Hunter specs. It places a trap on the ground that encases the first enemy (not bosses or most big encounter adds) to touch it in ice for 1 minute. The effect breaks on damage. The trap has a 30-second cooldown, and the trap will exist for 1 minute after placing it. This is useful when you are feeling overwhelmed by too many mobs, for temporarily taking out a powerful mob from the fight.
As an example, I will take my server values to calculate how many procs you need to make up the price of one Magnetic Mining Pick (40 SS ore, 10 Platinum ore, 15 Expulsoms). Assuming 25g per SS ore, 20g Platinum Ore, and 55x the price of Tidespray linen to craft 1 expulsom in average (got the value from a previous post in this subreddit); 1 Pick is worth 5325g (not counting the elemental flux).
Let’s consider the fact, that the token price is rising again with the Virtual Blizzcon Ticket and possible Addon-Announcements for Blizzard Games. The reason the token is so cheap right now is the fact, that a lot of players bought Tokens for real money at the Shop. The more tokens are ingame, the less gold they cost. Supply and demand is the keyword here.