Depends on if I'd turn into one of the locals or stay a human,If I turned into a local I would likely use my knowledge of earths fiction to produce ponified versions that is if they aren't already existing in that way to make money as a author even though I would be ripping off earths authors/makers of other kinds of fiction
If I stayed a human I'd likely do the same but also get in the business of messaging and a handyman after all hands should give better messages and hands would make doing the jobs ponys do easier . Then again I would likely kinda leech of Lyra abit till I can get enough bits to afford rent and food albeit I'd be having to go out and hunt for meat.
But if I end up with gryphon or changeling territory I'd be screwed considering on the gryphon territory is more times then not in MLP:FIM fanfiction as a mountainous cold area and extremely hot areas along with being a warrior race. The changeling territory I would become there food/energy source for awhile.