Look no more! Equestria: A History Revealed

It's a story written in-character in the style of an essay, and some very...interesting theories on Equestrian history are made by its arrogant, conspiracy-obsessed, racist author. From quoting a cereal box to alien sex orgies, the author's hilarious attempts at writing an essay that's meant to be taken seriously makes it all the more ridiculous. It covers every aspect of Equestria, from the birth of the nation, to the rule of Celestia, and (hopefully) to the ascension of Princess Twilight.

For another take on Equestrian history, and the events that helped shape MLP as we know it, check out Ghost Recon: Phantom Hunt. Set six years before the return of Nightmare Moon, it chronicles a secret conflict that shaped key aspects of the world of Friendship is Magic