In my opinion, Zygor makes the best WoW leveling guides. They have been around for more than 10 years, which shows their commitment to maintaining and updating their guides to provide you with an optimized leveling path for any class and race, whether it’s Horde or Alliance. Zygor is an addon that includes a waypoint arrow and a separate window with instructions that, taken together, show you step-by-step how to level your character to 120, FAST. You’ll know exactly what to do at all times. It’s also very easy to jump in at any level; you don’t have to start exactly at level 1 or 110 or anything. It’s a bit more expensive than the other options, but I’d say it’s definitely worth it.
As you continue to push through end-game content and you raise your reputations with various groups, you unlock more quests that send you to the opposing faction's continent where you generally try to mess with them, gather intel on their movements, and, of course, kill a whole bunch of them. These quest lines are fun, but generally pretty short and don't actually propel you through much of the three opposing zones.
Baelgun - Alliance Baelgun - Horde Balnazzar - Alliance Balnazzar - Horde Blackhand - Alliance Blackhand - Horde Blackmoore - Alliance Blackmoore - Horde Blackrock - Alliance Blackrock - Horde Blackscar - Alliance Blackscar - Horde Bloodfeather - Alliance Bloodfeather - Horde Bloodhoof - Alliance Bloodhoof - Horde Bloodscalp - Alliance Bloodscalp - Horde Blutkessel - Alliance Blutkessel - Horde Boulderfist - Alliance Boulderfist - Horde Bronze Dragonflight - Al... Bronze Dragonflight - Horde Bronzebeard - Alliance Bronzebeard - Horde Burning Blade - Alliance Burning Blade - Horde Burning Legion - Alliance Burning Legion - Horde Burning Steppes - Alliance Burning Steppes - Horde Bladefist - Alliance Bladefist - Horde Blade's Edge - Alliance Blade's Edge - Horde Booty Bay - Alliance Booty Bay - Horde Borean Tundra - Alliance Borean Tundra - Horde
Taerar - Alliance Taerar - Horde Talnivarr - Alliance Talnivarr - Horde Tarren Mill - Alliance Tarren Mill - Horde Teldrassil - Alliance Teldrassil - Horde Temple noir - Alliance Temple noir - Horde Terenas - Alliance Terenas - Horde Terrordar - Alliance Terrordar - Horde The Maelstrom - Alliance The Maelstrom - Horde The Sha'tar - Alliance The Sha'tar - Horde The Venture Co. - Alliance The Venture Co. - Horde Theradras - Alliance Theradras - Horde Thrall - Alliance Thrall - Horde Throk'Feroth - Alliance Throk'Feroth - Horde Thunderhorn - Alliance Thunderhorn - Horde Tichondrius - Alliance Tichondrius - Horde Tirion - Alliance Tirion - Horde Todeswache - Alliance Todeswache - Horde Trollbane - Alliance Trollbane - Horde Turalyon - Alliance Turalyon - Horde Twilight's Hammer - Alli... Twilight's Hammer - Horde Twisting Nether - Alliance Twisting Nether - Horde Tyrande - Alliance Tyrande - Horde Terokkar - Alliance Terokkar - Horde Thermaplugg - Alliance Thermaplugg - Horde
Grinding mobs is tedious and slow. Questing is much faster since you get the massive quest experience in addition to the monster's experience. There is no grinding in this guide - you can go through every single level by simply questing! There is minimal traveling time as the guide leads you visually through maps so you can quickly rack up quest experience.