So yes, it turns out the second you can get the achievement you can fly. No needing to buy a book or training or anything. Just hop on your flying mount and go for a spin.
I feel extraordinarily productive now. Like wow, now I can actually go out and do things like archaeology and fighting all the Draenor pet tamers and it doesn’t have to be a pain in the butt! It’s really rejuvenated the game for me.
The question now, of course, is: What’s gonna happen between now and the next expansion?