FWIW, if you're serious, my first step would be paring down all my accumulated "stuff" that I didn't really need. You could get extra cash for it, and detaching yourself from worldly things sounds like a good start for you.
As far as education goes, I'd research the hell out of scholarships, etc. If you really want to be a writer, you need to read a lot of books. You'll also probably want to have a day job until you get your feet wet.