If you have things you no longer want sitting around your garage, basement or attic, you can begin today earning a good income working at home selling those products online.

With sites such as Craigslist, GoLSN, or Kijiji, you can post free online classified ads and reach millions of potential buyers at absolutely no cost to you.

Begin by gathering the items you want to sell, cleaning them up and pricing them. Set a reasonable price and add a little negotiation room, if you desire, though it's not necessary.

Next, write up a short description about each item and take a good clear photo of each. You'll want to include any flaws the item may have, color and details in case prospective customers can't tell from the photo exactly what you have.

Add your contact information, including a phone number if you plan to deal locally, and anything else you can think of that will help your item sell. Don't include your family history, why you want to sell, or pleas for someone to help you out by buying from you. Work to sound professional but casual for the best approach.

Create an account on each of the three sites listed above if you don't already have one. If what you're selling is heavy or large, it's best to market locally to avoid shipping. Smaller items such as movies or CDs, however, can be shipped so you can place your ad in larger communities.

Once you place your ad, watch your email-if that's how you've chosen to be contacted-and respond promptly to any questions or requests for more information. If someone wants to see an item, and you feel uncomfortable bringing them to your home, agree to meet them in a neutral location such as a store parking lot. If you do have someone visit your home, be sure you're not alone and avoid allowing them inside.

At some point, you'll probably run out of things you own to sell. If you enjoy this business, that's when you can start asking friends and family for items to sell for a split of the profits. Or place a small ad in your local newspaper. You can even visit yard sales and offer to haul off all their leftover items at no cost. You can always find items to sell to keep this business going.

Selling items online can create a profitable home-based business for you starting immediately. And there is no initial investment other than your time. What could be better than that?