To sell the originals I agree with pp when they recommend selling at cafes and markets. Also you could try entering them in church fund raisers where they earn a commission from selling your work and local competitions/fairs where they do the same.
If you can't afford framing just extend the painting from the front to the sides of the canvas as well.
For prints etc. these two places come highly recommended from my artist friend community...
You could set up a store (for free) at zazzle.com
to sell your art printed on all kinds of things. You can also promote art from other artists there to receive a commission. For good quality prints of your work: imagekind.com
Ideally when you sell work online you need to be able to send traffic to your prints. This could be from a website, blog, your own advertising ie. business cards, flyers, ads, articles about you in the paper etc. If you want to be a bit more ambitious you could start an online newsletter
to encourage repeat business from your fans.
Hope this helps - 'cause art is fun!