Next is to setup your gallery to display as your homepage. First you have to create a gallery page. From your admin sidebar, open Pages > Add New. You will get add new page form. Enter page title and description.
Next look at “Page Options” box and select Gallery you want to display.
Then look at “Page Attributes” box and select Gallery as page template and save changes.
Next is to select recent created gallery page to display as your homepage. From your admin sidebar, open Settings > Reading> Front page displays then select “static page”