When editing your website, you can navigate to different pages in the content editor.
To open a different page for editing, either select it in the navigation menu or in the Content Editor.
To know which page you have open, look at the page name at the top of the page, or look for the green check mark in the list of page sin the Content Editor.
The Home page is indicated by a red home icon in the Content Editor.
The home page is the page that is shown to visitors when they first land on your website.
If you want to make a different page the home page, then open it in the website editor and in the editor sidebar click on the Make Home Page button at the bottom of the sidebar.