Selecting a Theme for New Websites
New customers that purchase a website will start by selecting and editing their theme from the website editor.
Once in your dashboard, you can click into the website page and select the Choose A Template button. That will take you to the theme selector page where you can preview and select any of the available themes. After you find a theme you like, choose the Edit This Design button to begin editing it in the website editor.
You can continue to switch across themes in the editor by clicking and scrolling through the Themes section in the left sidebar.
Managing Themes for Existing Websites
If your website has already been published, then you can continue to manage it from the website section of your dashboard.
You can switch themes for your site by selecting the Edit Site button in the top corner of the website section of the dashboard. That will give you access to your website editor and the option to changes your design template using the Themes option in the left sidebar.