Google Sites / Getting started with Google Sites
Create pages in a site
When you create a new site in Google Sites, the site will contain a single page. You can add new pages as required, which will automatically be added to the menu navigation so that your viewers can locate the new page easily.
To create a new page in a site:
Click on the Pages tab in the pane on the right-hand side of the screen
Click on the + button
Enter a name for the new page
Click on Done
Any new pages you create will show in the Pages pane on the right-hand side of the screen: