Note that the previous method to obtain the tome has been hotfixed and no longer works. Initially, discord user Darethius#8990 has obtained the tome one week ago accidentally by hearthing during the Zul encounter in Uldir on Heroic difficulty. This was unintended and was quickly fixed by the devs. As stated above, to get the tome you now have to kill Zul on Normal, Heroic or Mythic difficulty!
  2 Chief Financial Officers Left Activision Blizzard in 2019 Activision Blizzard is down two senior executives so far in 2019. The game company has first put the Activision CFO Spencer Neumann on paid leave for cause unrelated to the company's financial performance, and he later joined Netflix. Today, we learned that Blizzard's CFO Amrita Ahuja left the company for Square. Blizzard Blizzard Jan 04, 2019 at 15:17 by Stan 24 comments

Now lets get to a "math". You need 10k reputation for a cache. For a daily emissary quest, which gives the rep the fastest way you receive 1.5k reputation. Since the quest needs 4 of the world quests for said faction, lets total them up to 500rep which gives 2k reputation for an emissary cycle. Lets optimistically say that you require 3 minutes to reach a world quest and finish it, totalling at 12minuter per 2k reputation. It would mean that you spend an hour total on a chance to get up to 5k gold. Ofcourse there would be some exceptions to that, such as tortollan quests that need only 3wq, rare quests that give extra rep and more rep in general or for example follower missions for extra rep (but those require resources). But there is also a fact that you might take more than 3 mins to finish a wq which negates that.

This is a risky way to make money, and not recommended. Tell a player that if he beats you in a duel you will give him 10 gold, but if you beat him he has to give you 5 gold. This can be very effective if you are skilled in PvP and make the bet with a trustworthy person, or friends. It is a very risky strategy, as you may lose gold, or the other player won't cough up the money anyway. You will also get a bad reputation if you don't cough up the money in the case of defeat.

To use it as a bank, figure out how much you want to have on-hand on your character based on how much you normally spend on repairs, food, ammo, etc. and send the rest to the bank alt. The principle here is "Out of sight, out of mind.". Money "you don't have" cannot be spent, requiring you to log out of your character, and then to log into the alt.

While not as powerful as it was before 7.3, this transmog spot is a good area to amass a large number of BOE greens that generally fly around the 35 – 42 area.  It's popularity stemming from the amount of items that drop (and the potential value of those items) rather than the quality of each drop itself. Generally drops from these farms can take a while to sell even when using my TSM posting style.  However if your low on transmog stock this can be an awesome area to hit every now and then.
The expansion is set immediately after the events of Legion.[4] 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.[4] While the Alliance and Horde will initially travel to one continent respectively, both continents will be available to both factions at level 120.[4]
The most simple thing is TradeSkillMaster. This AddOn shows you quite an amount of information in the items tooltip. In my opinion, DBRegionMarketAvg the best source. It tells me the price, an item was posted on all EU realms in the last 14 days. Why not DBMarket? DBMarket only shows you the items value from your server in the last 14 days. This value often gets manipulated. Some people start to post an item with a 500g value for 500.000 Gold on the auction house for several weaks. As a consequence, DBMarket is rising towards 500.000 Gold.  If you use DBMarket with 100% and post your item for 500.000 Gold, nobody will buy it.