You can set up a Facebook shop by logging into your Facebook business Page, navigating to the shop page, setting up your profile, choosing a sales channel, connecting a Business Manager Account, setting up shipping and returns, previewing your information, configuring payments, creating a product catalog, publishing your shop, and starting to sell. To set up a shop, you need a valid bank account with the same name as your Facebook account, an EIN, SSN, or TIN for U.S.-based stores, and a working website for your business. You must also agree to the Seller Agreement and provide financial information about your business to enable checkout on your shop. The process involves linking a Business Manager Account, setting up shipping and returns, configuring payments, creating a product catalog, publishing your shop, and starting to sell. Facebook Shops is free to use but takes 5% from every shipment or $0.40 for shipments of $8 or less.