I do not recommend going for TBC, although I remember Hellfire peninsula to be decent, everything else is rather slow. Instead go for WotLK, Borean Thundra gets you levelled very fast, and then you can head straight for Icecrown at 67, which is also insanely fast, although admittedly has a few elite quests. You can go to Sholazar Basin alternatively. 2 zones should get you 60-80 no problem.
Fifth: As for Azerite Armor, I recommend getting the Chest first from Magini and if you do Vol'dun first, the first piece you can get will be a Head and the final piece from the zone with be Shoulders. That will give you all 3 pieces of Azerite Armor when you leave the first zone which will help out. If you are leveling a different spec from what you plan on playing, (i.e leveling as a dps when you plan to heal/tank) you will receive at least 2 pieces from every zone then 1 piece from starting the War Campaign that you can choose your Main Spec trait for. Pick the traits that will help you level the fastest.

Although the Company follows the procedures set forth above to protect the Personal data submitted to the Company, no method of transmission over the Internet, or method of electronic storage, is 100% secure. Thus, while the Company strives to use commercially acceptable means to protect your Personal data, the Company cannot guarantee its absolute security.

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.
Though related, this is no longer true. You can now purchase a lvl 90 character boost. Some power levelers have hoped for a day when you could use real money to buy individual items in-game, some times called "micro-transactions." At a Game Developers Conference 2008, Rob Pardo gave a strong indication, Blizzard would not ever go this route with World of Warcraft.
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.
The dark side of this disparity is griefing; max level players are able to easily disrupt questing areas in use by players of the opposite faction, and can one-shot most enemy characters. Sadly, even guards in most areas are unable to stand against well-equipped max level players, especially as the current expansion progresses and gear steadily increases in power. Of course, the best answer to this is usually to recruit some max level players of your own faction, or switch to a max level alt, and make the griefer regret the day they flew into Goldshire.
- Right to restriction on processing. If there are grounds for restriction on processing, for example if you contest the accuracy of your personal data, it will be stored and processed otherwise only if you consent or to exercise legal claims, or for the protection of rights of another natural or legal person. If we have disclosed the personal data in question to third parties, we will inform them about the restriction on the processing of the personal data, unless it is impossible or involves disproportionate effort to do so. We will inform you before the restriction is lifted. 
×