Head into your site settings (⚙️) and click into the 'Code' page.
At the top of the 'Head' tab, paste the theme code snippet.
To customize your site further, be sure to check out our Code Snippets page.
You can view a preview of the theme on a free account but to apply it to your live site and add a custom domain you will need to upgrade to a paid plan ($12 per month per site)
Turning your page into a site and adding a theme with Super