The site builder is a tool that you can use to create a website without needing technical knowledge of programming or web design. The site builder provides a range of templates and drag-and-drop tools that can be used to customize the look and feel of the website, add content, and publish it on the web.
The site builder can be found by clicking on Websites at the left side panel, and clicking on Create New Project then on the Create button on the Website / Funnel box.
You will then be greeted by this interface of the builder. Various tools at the top can be used to create and edit your website. Start by creating your first page here.