Use opencart or magento. Magento is more profesisonal but some extensions are paid. Opencart is completely free.
Hi Friend, Thats a great idea starting an ecommerce business online, High revenue earning platform. I would like to suggest 3 things for ecommerce as my experience will help you. 1. If you are planning to buy a ecommerce script, then AJ Shopping Cart Software ,will be the right choice with plenty of user friendly facilities. 2. If you worry about hosting issue, you can get Zscart - SaaS Ecommerce solution with easy monthly payment option and free trial too. you can make your shop with in five minutes. 3. If you are looking for free source means, Zeuscart will be right choice. Highly downloaded open source script online. Good luck ...Choose one for successful ecommerce business.