FYI: If you’re returning to WoW after an extended absence prior to patch 5.0.1, it’s possible that you’ll have more than the maximum pet limit and/or more than 3 of a kind. However, this will be the only time that you’re allowed to surpass these limits. You will have to pare down your collection, eliminating your duplicates, in order to add new pets.
Related to this, we’ve seen a lot of questions about the general invite process and want to clarify a few things. The method in which people are invited from the opt-in pool is not on a first-come-first-served basis, but instead we look at a variety of factors such as the age of the account. That said, the amount of closed beta invites that we’re sending out is rapidly decreasing as we have met our current population needs for testing. We’ll regularly reevaluate the need for additional invites as we go through the testing process.
The vanilla WoW Horde leveling guide you see on this site was originally made back in 2006 by Joana (AKA Mancow, or FuriousPaul). The guides have been tweaked many times over the years to make things "faster". The leveling guides were made because of all the messages I got from people asking me how I was able to level up so quickly on new realms. I was first to level 60 on 7 different realms (3 with Mancow and 4 with Joana), even winning Blizzard's "First to Level 50" contest they held back in 2006.