The guide should advance to the point where you are in the zone's progression. There are a few steps that can-not autocomplete and they should (hopefully) have comments to the effect of -- you need to manually check this step off. -- For some reason you have to click these steps off 2-3 times to work. (the first time will move the tom-tom arrow, the 2nd time unchecks it and the 3rd click advances the guide).
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.
Also get the Heirloom Mount. Being able to have basic riding speed from the beginning will save you a lot of time if you're starting from level 1. Allied races start at 20, so this is a non-issue for them. It's important to note that Pandaren can not use this mount until they finish their starting zone and pick a faction. Being Horde or Alliance is a requirement of the mount.
N Nagrand Alliance Nagrand Horde Nathrezim Alliance Nathrezim Horde Naxxramas Alliance Naxxramas Horde Nazjatar Alliance Nazjatar Horde Nefarian Alliance Nefarian Horde Nemesis Alliance Nemesis Horde Neptulon Alliance Neptulon Horde Ner'zhul Alliance Ner'zhul Horde Nera'thor Alliance Nera'thor Horde Nethersturm Alliance Nethersturm Horde Nordrassil Alliance Nordrassil Horde Norgannon Alliance Norgannon Horde Nozdormu Alliance Nozdormu Horde
Another popular leveling guide is called “Booster”, which is also available for all races of Horde and Alliance. Similar to Zygor, Booster is an addon that you view inside the game, and it tells you exactly where to go and which quests to do every step of the way to level 120. The leveling path was created by professional gamers, and optimized to make your leveling as fast as possible. Booster also comes with free lifetime upgrades and updates, so you literally just have to pay once and use them forever, which is awesome. It’s created by a company called Dynasty Addons, that has been around for almost 10 years, and their guides and addons have always been updated in a timely manner for every expansion pack. It’s easy to see why this leveling guide is so popular.
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.
Fourth: When the enemy faction controls the Warfront, you get access to 11 quests that allows you to trade materials for AP and honorbound rep. This is huge because you get 750 AP per turn in and 500 rep per turn in which gives you a total of 8250 AP and 5500 rep; that is a massive amount. All the material you got from scrapping all your leveling gear will come in handy here and I imagine that you will be able to trade other players for different turn ins. I highly recommend trying your best to do all 11. Also, this will be a great opportunity to make some serious cash for your profession because people will be buying the same items in bulk.
Aegwynn - Alliance Aegwynn - Horde Aerie Peak - Alliance Aerie Peak - Horde Agamaggan - Alliance Agamaggan - Horde Aggramar - Alliance Aggramar - Horde Ahn'Qiraj - Alliance Ahn'Qiraj - Horde Al'Akir - Alliance Al'Akir - Horde Alexstrasza - Alliance Alexstrasza - Horde Alleria - Alliance Alleria - Horde Alonsus - Alliance Alonsus - Horde Aman'Thul - Alliance Aman'Thul - Horde Ambossar - Alliance Ambossar - Horde Anachronos - Alliance Anachronos - Horde Anetheron - Alliance Anetheron - Horde Antonidas - Alliance Antonidas - Horde Anub'arak - Alliance Anub'arak - Horde Arak arahm - Alliance Arak arahm - Horde Arathi - Alliance Arathi - Horde Arathor - Alliance Arathor - Horde Archimonde - Alliance Archimonde - Horde Argent Dawn - Alliance Argent Dawn - Horde Arthas - Alliance Arthas - Horde Arygos - Alliance Arygos - Horde Aszune - Alliance Aszune - Horde Auchindoun - Alliance Auchindoun - Horde Azjol Nerub - Alliance Azjol Nerub - Horde Azshara - Alliance Azshara - Horde Aggra (Português) - Alli... Aggra (Português) - Horde Azuregos - Alliance Azuregos - Horde Area 52 - Alliance Area 52 - Horde Azuremyst - Alliance Azuremyst - Horde Ashenvale - Alliance Ashenvale - Horde