I have been doing online sales for over 5 years, and have got some good resources. I am going to share these with you, and hopefully you can be benefited from this.
(1)First register with
http://www.paypal.com &
http://www.google.com (checkout)
These are two credit-card processors, which will make it super simple for you to get started immediately.
(2)You require a name for yourself. I recommend
http://www.domaindiscover.com or
http://www.godaddy.comThese to URL providers have great customer service, and good pricing.
Remember, a good URL can be your foot in the door when it comes Google ranking,
(3)If you have under 1'000 products, I suggest
http://www.ecrater.comThis website hands-down offers the most resources, and traffic for a FREE website, and cost NOTHING!!!
(4)If you have over 1,000products, I suggest
http://www.instantestore.com