Solo is not optimized for large ecommerce sellers and does not have native shopping cart or other functionality. However, many still use Solo to set-up light-weight stores and then add payment links to Stripe or Paypal landing pages. One way to do this is to use the Services section to add products to your Solo website:

1. Visit the designer
2. In the top toolbar, click [Sections]
3. In the Sections right sidebar, click [Add section]
4. Double click the [Services] section in the modal to add it to your website
5. In the designer area, scroll down to the Services section, and hover over the section
6. Click [Edit section]
7. In the Services right sidebar, you can click [Add Service] to add new products to your website

You can edit the existing services (images, description, and button text) and also point to a buy or payment link (e.g. Stripe or Paypal) for each product.

Note, Solo allows you to add up to 24 services or products. Alternatively, you can also use a Text Banner section to feature a single product or the Article section if you want to provide a lot of detail about a single product.