World of Warcraft has an insane amount of content, so you can bet that there are also an insane amount of achievements to complete. Some of these achievements yield special rewards, either in the form of mounts, tabards, or awesome titles that let other players know how cool you are. The "Higher Learning" achievement, however, rewards you with a pretty unique pet called a Kirin Tor Familiar—but you'll need a lot of patience and luck to complete it.
In order to attain this genie-like pet, one must travel to the floating city of Dalaran. While there, the player must find eight hidden books on Arcane Magic. Sounds easy enough, right? Wrong. The books spawn at different times and at different locations, so you'll need to know the patterns and which paths to take. And of course, you also have to account for other achievement hunters vying for the same reward. Brew a few pots of coffee before you go after this one.