Note: My goal here was to create a comprehensive list of everything you'd need in order to learn to play any class (from Level 1 to Naxxramas)—meaning I am only including class-specific resources here (so no profession guides, general leveling guides, etc). Teeb's Resource list is much broader in scope, and I highly recommend you take advantage of it (as it contains a plethora of non-class specific resources as well). If you're not aware, Teeb is also responsible for the Race & Class Comparison Tool, Dungeon Tier Sets Gallery, and a huge variety of other insanely useful resources.
The system is automated, meaning that once slots are available, beta testers will be chosen, without any beta key to speak of. Kaivax then goes to stress the importance of your account security, stating that, “any third-party e-mail messages, websites, or in-game whispers that offer beta keys or access to the WoW Classic Beta should be considered illegitimate and ignored or reported.”
It's time to do this again! I am bringing this back for nostalgic value along with a way for you guys to support me! Now keep in mind I am sending the very first original version of my leveling guide for Horde (I did not make an Alliance guide back then). This is not really meant to be used to level through WoW, even though you could use it for that purpose. My website JoanasWorld.com contains the latest up-to-date version of my leveling guides which have changed a lot over the years.