The home page of your site is listed as index in the web site editor list of pages (this is the technical term for home pages)
1) To access it, click on the "Web Editor" tab and "Web Editor" subtab
2) Click on the pencil icon to the left of the word "Index (HOME PAGE)."
2) Click on the area of the page you wish to edit.
3) The widget will open in the editor. When finished making edits to widget click the "Save Changes" button below
4) You can restore the original widget version anytime
5) To change a widget, select a widget from the dropdown menu
6) When finished making edits to page click the "Save Changes" button