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!
Most classes in World of Warcraft start at first level, but Death Knights and Demon Hunters are exceptions. They start at level 55 and 98, respectively. This alone can shave a huge chunk of time from your leveling experience. Of course, it only works if you want to play a Death Knight or Demon Hunter, but they’re both solid classics that can dish out damage or tank in a group.
Gather your allies and descend upon massive raids to face gargantuan bosses in Uldir, a sprawling underground facility designed by the titans to research and quarantine deadly specimens that now run amok. New in Tides of Vengeance, experience the Battle of Dazar'alor, as war reaches the shores of Zuldazar, and the Alliance embarks on a daring gambit to besiege the golden pyramid and sever the Zandalari’s bond to the Horde.
We’ll be receiving more details on Patch 8.2, Rise of Azshara, once it hits the public test realm. The core issue that Blizzard will need to solve is restoring a sense of player agency. While the new patch seems chock full of endgame content and systems, it remains to be seen whether those help make players feel more powerful and in control. Azshara is one of the most intimidating villains remaining in World of Warcraft, and she may be able to restore a sense of agency and urgency to players as they prepare to raid her eternal palace.
Nearly all quests offer cash or items as a reward, and often both. While completing quests shouldn't be your main form of wealth generation, it is something you are going to do anyway. The key to making the most of quests is picking your reward items wisely. Don't always pick the item that most fits your class - if it isn't demonstrably better than your current item, instead go for whatever reward sells for the greatest amount to the vendor. You can select the in-game interface option to display it in the tooltip. In general, if you can't use a quest reward for your character, pick either a plate-armor or melee weapon as your reward--these tend to sell to vendors for more than other items.
This farm almost did not make this list. Even though I have had only a little luck with it, it seems to be gathering some popularity in the gold farming community. Although I feel with the recent changes in 7.3, this farm is very close to dying out. Generally what you want to to do is pull every mob you can as you venture to the last boss in the instance. The only saving grace of this farm (if you can call it that) is that some mobs are GUARANTEED to drop greens. Guaranteed. Whether or not they drop profitable greens is a different question, however it's a must-mention quirk you get from running this instance. It also allows you to get your hands on some rare low level blues.