Hello! I searched for this but didn't find anything.
For those of you who do not know of the "Higher Learning" achievement, it is one where you must read 8 extremely rare books in Dalaran. Upon completing it, you get a super rare pet. Kirin Tor Familiar - Item - World of Warcraft
Anyways.. For those of you that have attempted it, it's pretty long and annoying.
But I've found a pretty easy way to do this! I haven't included screenshots, because there's really no reason for it. If you'd like a screenshot proving that I have the achievement completed than I can do that.
The trick is server resets and crashes.
Everytime the server resets, spawn locations pop up. Usually, you would have to wait around 3 hours for each book to respawn - and it might not even be the right one! But everytime the server resets, books pop up in all 8 locations. (Note: It may not be the correct one, as with usual respawns)
During the Wintergrasp bug out where the servers crashed every 20 minutes, I managed to grab all 8 books.
Probably the best and most reliable thing to use is every Tuesday, when the servers log off for bug fixes/patches, if you log on when they come back up all book locations will have spawned books.
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As for the spawn locations: (Better idea to look on wowwiki/thottbot/wowhead)
Introduction: Spawns in the Teleportation Crystal room, on the floor.
Divination: Spawns in Violet Citadel, near the port to Caverns of Time.
Necromancy: Spawns on top floor of Ledgermain Lodge, in a room with an empty bookshelf.
Conjuration: Spawns in the Violet Citadel, on the bottom floor bookshelf right of Rhonin.
Abjuration: Spawns in the Dalaran Visitor Center, next to the chair and bookshelves.
Transmutation: Spawns on the bottom floor of Ledgermain Lodge, in the empty bookshelf.
Enchantment: Spawns on the second story balcony of the store Threads of Fate.
Illusion: Spawns on a box next to the normal dungeon daily quest giver by Violet Hold.
Good luck and happy hunting!