Always carry a towel
Female - 17 Years Old
A friend of mine self-published a novel not too long ago, I think she used Createspace for her novels. It's a series, so I think she got a deal package or something.
I'd suggest creating a fanbase/interest first because no one really looks up Amazon just for the hell of finding amateur writing. A friend of mine used to write on Fictionpress.com prior to self-publishing and now actually has quite a few people purchasing her novels (for dirt cheap, like $0.99 USD) so maybe give everyone like a free sample (collection of short stories maybe or a novel or something) and then gain interest. Other sites like Livejournal, Deviantart, and tumblr are popular for that too. I think you can sell off Deviantart too but I'm not sure.
Also, be wary of the crappy DIY publishing companies that basically offer you shitty deals to sell your novels.
And if you have an editor friend (even an English major or something), that'd be a good idea to talk to them about your book. Beta readers, any form of feedback is a good idea from your younger siblings to your professor. You don't really realize what's wrong with your novel till someone points it out and trust me, there is always room for improvement and if you're looking just to sell (like my crazy English sub) then they can give you hints on what will sell.