Kael'thas - Alliance Kael'thas - Horde Karazhan - Alliance Karazhan - Horde Kargath - Alliance Kargath - Horde Kazzak - Alliance Kazzak - Horde Kel'Thuzad - Alliance Kel'Thuzad - Horde Khadgar - Alliance Khadgar - Horde Khaz Modan - Alliance Khaz Modan - Horde Khaz'goroth - Alliance Khaz'goroth - Horde Kil'jaeden - Alliance Kil'jaeden - Horde Kilrogg - Alliance Kilrogg - Horde Kirin Tor - Alliance Kirin Tor - Horde Kor'gall - Alliance Kor'gall - Horde Krag'jin - Alliance Krag'jin - Horde Krasus - Alliance Krasus - Horde Kul Tiras - Alliance Kul Tiras - Horde Kult der Verdammten - Al... Kult der Verdammten - Horde
While the expansion kicks off with heavy references and scenes of this war, leveling through the Horde side of the new content it barely came up again. Except for all the times I had to mine Azerite to make sure my faction was the leader in the Azeroth version of a nuclear arms race. The Alliance side of things had some heavier references to to the war, at least in the portions I played, with one scenario in Stormsong Valley where a fleet of Horde aggressors bombed a town.
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!
In August 2016, when Legion was released, a WoW token was worth 35,000 gold. Prices began to rise after Blizzard announced that tokens would be redeemable for Battle.net balance, and when the new functionality was released, the price of a token surged to about 90,000 gold. In July 2018, shortly before the release of Battle for Azeroth, prices peaked above 200,000 gold per token.
Also note that power leveling is sometimes used to refer to paying someone else to level your character to cap as fast as possible (i.e. they power level for you); a distinction used by Blizzard is to refer to the paid leveling as "power leveling service." This behavior is against Blizzard's Terms of Service. Power leveling yourself, which this article covers, is perfectly acceptable.
Congratulations on reaching Level 120! There are a myriad of new things to do. The first thing you should do is head to your faction hub ship where you have been doing your mission table quests and footholds to pick up and complete the quests necessary to unlock World Quests. World Quests will provide you an opportunity to grind reputation levels, acquire gear, and gather Azerite. There are tons of new things to do that we will cover in our Level 120 Battle Guide found here: Level 120 Battle Guide