1. Create an eBay account, if you don't have one yet.

2. Confirm your account information and payment method. You need to make sure your account information and payment method are accurate and that you can accept payment.

3. Search for the product you want to sell on eBay. In the "Advanced Search" page, you can search for information related to the product you want to sell, such as category, brand, price, etc.

4. Create a product listing. You need to create a product listing on eBay, including information such as product pictures, descriptions, prices, and shipping methods.

5. Set the price and payment method of the product. You need to set the price of the product and the payment methods you accept.

6. Decide on your shipping method. You need to decide on your shipping method and set the shipping fee.

7. Confirm your terms of sale. You need to make sure your terms of sale are accurate and that you have explained your refund and return policy clearly.

8. Publish your product listing. When you publish your product listing, you need to make sure your product listing is accurate and that you have explained your terms of sale clearly.

9. Resolve any issues. If the buyer has any questions or complaints, contact them as soon as possible and resolve the issue.

10. Ship. Once you sell the product, you need to ship it as quickly as possible and provide a tracking number.