There are a few things you need to do in order to sell online:  1. Choose the right platform - there are many different eCommerce platforms out there, so do your research and choose the one that best suits your needs.  2. Create attractive listings - make sure your product photos and descriptions are clear and enticing.  3. Set competitive prices - take a look at what similar products are selling for and price your items accordingly.  4. Promote your products - use social media, email marketing, and other channels to spread the word about your online store.  5. Provide great customer service - always be responsive to questions and concerns from your customers.