I am talking about Joana's Horde Leveling Guide. Written by a professional player who won Blizzard's contest a few years ago, this guide contains unique leveling strategies and techgniques. But the biggest advantage of this guide is that it contains leveling videos. You can whatch every move Joana did to get to level 70 so fast. This feature sets Joana's Guide apart from the crowd.

Joana always updates his guide. Recently, he has added a mapmod to the guide. I think you have already heard about this addon. It is used to point out NPC and quest coordinates from the guide right on your game map so there is no need to press ALT+TAB to find your next coordinate anymore. Just follow the dots on your map and you are on the way to level 70.

However Joana's Horde Leveling Guide has some disadvantages two. As you see from its' name, it is horde only. If you are alliance you can forget about using it. The other disadvantage is that it is too detailed. I think that it is a little bit annoying. Go there, turn there etc. But even if Joana's Horde Leveling Guide isn't ideal, it is one of the best guides in world of warcraft which has helped hundreds of players to get to the highest level faster then their competitors. If your main goal is to get to the highest level, this guide is undoubtedly what you need.