You should try and quest efficiently - pulling several mobs if you can handle it, using your burst cooldowns while questing to kill everything faster. Many people would think that a 10-minute cooldown like Bloodlust is useless in open world, but you can do a "kill-15-mobs" quest in like 30 seconds if you pull a lot and use it. A free quest every 10 minutes is not that bad.
The WoW token is very simple: You pay Blizzard $20 for a token, and then you can sell the token on the in-game auction house. A player with gold can buy a token and redeem it for a month of WoW subscription time or for $15 of Battle.net balance, which is like a gift card credit that can be redeemed in WoW or other Blizzard games such as Hearthstone and Overwatch. You get their gold; they get your cash, or at least most of it.
I highly recommend actually staying in the 20-60 range zones until you ding 62. The reason for this is that despite getting a slight penalty in experience for being over-level, the advantage of having flight will more than offset this. That, and WOTLK and TBC zones are the slowest part of the leveling process. Minimizing your time there as much as possible is worthwhile.
According to a recent report, the developers dug into the numbers and saw that this was a legitimate issue, as leveling in that range took about 15 percent longer than levels before or after. While the hotfix notes don't go into too many details, Blizzard explains that the experience required to gain a level has been lowered for the range of levels 40 to 100. That brings the amount of time needed to level between the magic 60 to 80 range down by 14 percent, with a smaller reduction in time between levels 40 and 49. We figure a lot of math had to go into figuring out a proper adjustment here but, assuming Blizzard's estimates are correct, that should appease players who felt like they were stuck within a certain range for too long.
Heirlooms. At the bare minimum you make sure all the armor pieces upgraded to 110, since this is the lion's share of your experience increase. Neck and Ring upgrades are secondary, but still important due to being able to enchant them. Trinkets can't be enchanted, but you'll want them at max as well, if only to save time by not having to worry about replacing them as you level.
Daggerspine - Alliance Daggerspine - Horde Dalaran - Alliance Dalaran - Horde Dalvengyr - Alliance Dalvengyr - Horde Darkmoon Faire - Alliance Darkmoon Faire - Horde Darksorrow - Alliance Darksorrow - Horde Darkspear - Alliance Darkspear - Horde Das Konsortium - Alliance Das Konsortium - Horde Das Syndikat - Alliance Das Syndikat - Horde Deathwing - Alliance Deathwing - Horde Defias Brotherhood - All... Defias Brotherhood - Horde Dentarg - Alliance Dentarg - Horde Der Mithrilorden - Alliance Der Mithrilorden - Horde Der Rat von Dalaran - Al... Der Rat von Dalaran - Horde Destromath - Alliance Destromath - Horde Dethecus - Alliance Dethecus - Horde Die Aldor - Alliance Die Aldor - Horde Die Arguswacht - Alliance Die Arguswacht - Horde Die ewige Wacht - Alliance Die ewige Wacht - Horde Die Nachtwache - Alliance Die Nachtwache - Horde Die Silberne Hand - Alli... Die Silberne Hand - Horde Die Todeskrallen - Alliance Die Todeskrallen - Horde Doomhammer - Alliance Doomhammer - Horde Draenor - Alliance Draenor - Horde Dragonblight - Alliance Dragonblight - Horde Dragonmaw - Alliance Dragonmaw - Horde Drak'thul - Alliance Drak'thul - Horde Drek'Thar - Alliance Drek'Thar - Horde Dun Modr - Alliance Dun Modr - Horde Dun Morogh - Alliance Dun Morogh - Horde Dunemaul - Alliance Dunemaul - Horde Durotan - Alliance Durotan - Horde Deathguard - Alliance Deathguard - Horde Deathweaver - Alliance Deathweaver - Horde Deepholm - Alliance Deepholm - Horde Der abyssische Rat - All... Der abyssische Rat - Horde
You’ll need things produced by many of these professions to optimize your character, but you only get two professions you can do yourself. Unless you want to grind on a second character to collect all the reputation-gated recipes for other professions, you will probably need to buy the stuff you can’t make for yourself on the auction house. And if the price of the stuff you need exceeds whatever your questing and your followers are bringing in, you might want to sell some of your own trade goods or raw materials in order to finance your purchases.
By constantly doing quests, you will experience a very different game than if you just level through pure grinding. You'll be out there making a contribution towards the Alliance or the Horde. Doing these quests takes you through the heart of the game's story AND provides the fastest rate of experience. Have fun in World of Warcraft and enjoy developing your hero - your adventures will gain you great reputation amongst the land.
Edit 20 It’s been a week since this post and a lot of people are still reaching out to me with questions which is fine. I have had a few different people reach out to me to help make YouTube videos based off this guide and more info in BFA which I’m more than willing to do. Whoever gets the videos up first I will link them here for you guys to enjoy.