Pinkie Pie had stumbled upon a book, containing some very odd spells. Just holding the book made her excited; which made her go to her dear friend Twilight Sparkle, in order to explore what she thought the spells was meant for.
I just recently started to write stories directly towards the FiM actively, though I have been writing for years, publishing numerous stories at Mibba and the eventual pony story, as far as to the MLP