Although the Battle Pet Trainer will only offer to teach you your race-specific companion, it is possible to add all of these pets to your collection. You can either find them in your faction’s auction house or you can create a character of the race whose pet you would like to learn. Using your new character, you can seek out any battle pet trainer in major cities. After you learn the pet, you can delete the character; the pet you learned will not be removed from your collection.
The leveling path was built around using a Hunter character and run by a player who knows how to use that character well. For the average player running, for example, a Paladin, the guides could be frustrating in spots, due to the level of the mobs. I played through Joana’s Guide with a Rogue (all the way from 1-70) and was able to deal with most everything, except for a few elites and I skipped most all of the group quests.
This farm very much resembles the Dire Maul farm in that it allows you to hit multiple markets without having to do too much. You can mageweave, runecloth, greens, world drops, and herbs all from this one single spot with the addition of countless transmog items. I personally love this spot – however I feel I stumbled upon it a little to late. The benefits is that this is the LARGEST instance in the entire game – literally. You can spend up to 15 minutes pulling the entire instance. You are rewarded however with an abundance of drops of all kinds. You can quickly fill up your inventory here. If you need greens form the 47-51 area, this is your spot. As mentioned, you will also get soo many trade goods that it's hard not to fill even the biggest of bags.
Allied races are variants of existing races. The Void Elves are a version of Night Elves, while the Highmount Tauren are, you guessed it, a version of the Tauren. Four allied races are already in the game before launch and two more, the Dark Iron Dwarves and Mag’har Orcs, were added after Battle for Azeroth launched. Each Allied Race has its own racial abilities. You can also unlock a heritage armor set by leveling any Allied Race to the level cap.