If you want to sell goods or products on online e-commerce sites, there are several steps you need to follow. Here is a detailed answer outlining the process:

1. Research and choose the right e-commerce platform: Start by researching different e-commerce platforms to find the one that best suits your needs. Some popular platforms include Shopify, WooCommerce, Magento, and BigCommerce. Consider factors such as pricing, ease of use, customization options, and available features.

2. Set up your online store: Once you have chosen an e-commerce platform, you need to set up your online store. This involves creating an account, selecting a domain name, customizing the design and layout, and adding relevant information about your business.

3. Source or create your products: Determine what products you want to sell and ensure you have a reliable source for them. You can either source products from manufacturers, wholesalers, or dropshipping suppliers, or you can create your own products if you have the necessary skills or resources.

4. Take high-quality product photos: Good product photos are crucial for attracting customers and making sales. Invest in a decent camera or hire a professional photographer to capture high-quality images of your products. Ensure that the photos showcase the product from different angles and highlight its features.

5. Write compelling product descriptions: Along with high-quality photos, well-written product descriptions are essential for conveying the value and benefits of your products. Clearly describe the features, specifications, and uses of each product, and use persuasive language to entice potential buyers.

6. Set competitive prices: Research the market to determine competitive pricing for your products. Consider factors such as production costs, competitor prices, and perceived value. It's important to strike a balance between profitability and attracting customers with competitive prices.

7. Optimize your product listings: To increase visibility on e-commerce sites and search engines, optimize your product listings. This includes using relevant keywords in titles, descriptions, and tags, as well as providing accurate and detailed product information.

8. Provide secure payment options: Offer secure and convenient payment options to your customers. Most e-commerce platforms integrate with popular payment gateways such as PayPal, Stripe, or Square. Ensure that your customers' payment information is protected through SSL encryption and other security measures.

9. Set up shipping and fulfillment: Determine the shipping methods you will offer and set up shipping rates accordingly. You can choose to handle shipping and fulfillment in-house or outsource it to a third-party logistics (3PL) provider. Consider factors such as shipping costs, delivery times, and tracking options.

10. Market and promote your online store: Once your online store is set up, you need to market and promote it to attract customers. Utilize various marketing channels such as social media, email marketing, search engine optimization (SEO), content marketing, and paid advertising to drive traffic to your store.

11. Provide excellent customer service: Ensure you have a system in place to handle customer inquiries, complaints, and returns. Promptly respond to customer queries, provide accurate information, and address any issues that may arise. Positive customer experiences can lead to repeat business and positive reviews.

References:
- Shopify: https://www.shopify.com/
- WooCommerce: https://woocommerce.com/
- Magento: https://magento.com/
- BigCommerce: https://www.bigcommerce.com/
- Shopify Blog - How to Set Up an Online Store: https://www.shopify.com/blog/how-to-set-up-an-online-store