A home page is the front door to your site. Using the steps in this guide, you can change your home page to any page you’ve created.
If you don’t have any pages on your site yet you can follow the steps here to create one.
Once you have created the page you want to use as a homepage you can set it as the homepage of your site by tapping on Site Pages and then tapping on the ellipse menu 
to the right of the page you would like to set as the homepage:
