These things happen during prepatches. There are always kinks to work out, and typically those kinks are offset by the items and experiences players receive during the prepatch events themselves. The vast list of bugfixes demonstrates just how doggedly Blizzard developers are playing whack-a-mole with in-game issues. But in the past few expansions, it's become a bit of a trade: Hang with us during the rough patch and we'll reward you with goodies and some seriously overpowered, fun gameplay, Blizzard seems to say.
For Alliance it's Lok'Modan, Redridge, Darkshore, Felwood, Stranglethorn (both parts), Plaguelands. Somewhere between 3 - 3.5 of these get you to 60 in like a 16 hours /played, if you queue for dungeons at the same time. I recommend dropping everything at 45 and going to Darkshore-Felwood if you didn't do them yet - they are literally the fastest levelling zones in the game right now, maybe only trumped by Silverpine.
Flèche de direction – Même principe que TomTom, cliquer sur un objectif de quête crée automatiquement un point de destination. Une flèche de direction vous guide alors. Elle est verte quand vous entrez dans la zone de quête. Vous pouvez aussi créer des points manuellement en maintenant la touche CTRL enfoncée et en cliquant droit sur la carte ou des suites de points en maintenant la touche SHIFT enfoncée et en cliquant droit sur la carte. Chaque point est relié par une traine permettant de définir une route.

This is also the reason why when I read in WoW forums of people skipping guide sections, due to being too low level I'm not agree and start ranting about it: it'll be a mess syncronizing with the guide and I've seen many people complaining about missing quests or accusing the guide for being innacurate, but not realizing that was their fault since they're skipping and missing a lot of quest chain requirement. Of course this apply if you're following a guide, believe me, it's very frustrating when you remain stuck in a guide section due to the reasons I've mentioned, more than doing grey quests (but they allow to be perfectly in sync with the guide) and goiing here and there to get the pre-requisite quests.
Azeroth paid a terrible price to end the apocalyptic march of the Legion’s crusade—but even as the world’s wounds are tended, it is the shattered trust between the Alliance and Horde that may prove hardest to mend. As the fires of war continue to roar, take the battle to both new and familiar lands with the Tides of Vengeance update, and join your allies to champion your faction’s cause.
Step-by-step class guides are on the way!  The 1-12 Mulgore Guide is the first guide to get all the individual class steps.  At the top of the guide, simply select which class you are playing and the page will dynamically update all the steps in the guide for that class (both text and images).  The rest of the guides will be slowly updated overtime to include all the class steps, but you can see how it's going to work with the 1-12 Mulgore.  I want to thank crazyK and his Placeholderguild for helping me out with the individual class content.  They are allowing me to get the 1-60 Alliance guide done while also getting all the class steps done at the same time, so everything can be ready for Classic launch (hopefully).
Dugi’s leveling guide is the leveling addon I’ve always used to level as fast as possible. It will show you where to go and what to do in-game, speeding up the leveling process. This is optional though, as the game already does a pretty good job at showing you where to go at all times. The addon does, however, come with a couple of other nice features and perks.
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