Joana's Classic WotLK 1-80 & Era 1-60 Speed Leveling Guides
1-12 Night Elves (Alliance) - Teldrassil
Leveling from 1-60: Questing and Dungeons - Guides - Wowhead
Ding80's Alliance Duskwood Guide Part 1 Level 21
Classic WoW Alliance Leveling Guide and Recommended Zones - Guides - Wowhead
I have made a free, updated leveling guide for wow classic (only Alliance/PVP for now). Far more efficient and superior to Joana's guide by up to 100,000% or even more. : r/classicwow
Leveling from 1-60: Questing and Dungeons - Guides - Wowhead
WoW Classic Alliance Leveling Guide (1-60) - World of Warcraft Classic Leveling Guide Wiki Guide - IGN