See if this helps. https://support.mozilla.org/en-US/questions/1558597

If you don't see the Home [[Image:Fx89HomeButton]] button in your Firefox toolbar, you can add it by customizing the toolbar as explained in the [[Customize Firefox controls, buttons and toolbars]] article: Click the menu button [[Image:Fx89menuButton]] at the top right area of the Firefox window, click '''More tools''' and choose the '''Customize toolbar…''' option. A special tab will open that allows you to drag and drop items in or out of the overflow menu and the toolbar, including the Home button. To learn more about the Home button and the Firefox Home page, see [[How to set the home page]].