how to sell stuff online and make money is a popular way to generate income. To sell stuff online, first choose a platform, such as Amazon, eBay, or Shopify. Create a seller account, list your products with detailed descriptions, high-quality images, and competitive prices. Use Amazon’s tools like FBA or FBM to manage fulfillment and customer service. Marketing your products through social media, email campaigns, and paid advertising will help you reach more potential customers and increase your sales.