Just quickly, I wrote about Prose Poems recently and tried a few drafts here - which caused a few people to ask me questions. I gave short, probably useless, answers. So now I am directing anyone interested in the form to Poets.org's history and explanation, with examples, at http://www.poets.org/viewmedia.php/prmMID/5787 In the margin they have a great list of examples, too.
The best way to find out about any poetic form is to attempt it. Even a rough and tumble result will have taught you more than any instruction manual.