Many, many things have occurred throughout Equestria's existence, even before ponies were as intelligent as Princess Celestia and Princess Luna. But what all is there worth knowing about? We don't know, but Twilight Sparkle does, the studious pony that she is! It's time we discovered more about Equestria in general, from the earliest times of civilization to the most deeply-hidden secrets only revealed to Celestia's most gifted student, by Celestia herself.