The best products to sell are those that you believe in, this will give you credibility and passion. Since you want to sell products that someone else created you also need to make sure the company is reputable. Otherwise you won't get paid and there are a lot of scams out here regarding selling of all types of products and services. If you're good on that, one route to take is to become an affiliate.

Google the product or service you'd like to sell and add "affiliate" then hit enter. Check out the results. You should see more details about how to become an affiliate for the product or service. You may be able to sell over the phone and even online. With the winter holidays approaching there are a lot of places looking to sell stuff. Retailers, technology, fashion, automobiles to name a few. Also see the support system and reputation of the company. Another source to checkout is ClickBank. You'll find a whole host of products you can sell and earn commissions.

Happy Selling!