You want to sell your book? It takes perseverance, patience and some understanding of the basic principles involved.

[edit] Steps

First of all any other websites you have names on let them know about your book. You have myspace? Put it on there you have books to sell.
Ask certain stores if you can set up a bookstand in front of the store, grocery stores are the best.
If you can't do that, set up a bookstand in your yard and put an ad in the newspaper to let people know.
Take orders for books over the computer and have people come a certain day to pick them up.
Send your story into as many publishers as you can! Don't give up after one try. Did you know that J.K. Rowling was rejected at least 6 times before she was published?
If you can, make a cool looking cover on the computer or with pencil and paper.
Ask if you can set up a bookstand in your town's library.

[edit] Tips

Always type your stories; that will encourage more people to buy it.
Have someone proofread it for typos and grammatical errors. If you misspell a lot of words, your readers will (A) find your book or story difficult to read, and (B) have a hard time taking you seriously as a writer.
Make sure you have a back of the book to give a little summary or, even better, make a summary on a colorful piece of cardboard.
Make it look as interesting as possible wherever you are; that always gets people to come to you. Offer refreshments , maybe say, "if you buy a book you can get a free glass of lemonade along with it."
If you can, have your book professionally bound with a hard cover. You can learn to to this yourself by searching online for Do-It-Yourself Book Binding.