If your home page was hijacked or automatically changed, see Remove a toolbar that has taken over your Firefox search or home page.
If you don't see the Home button, have a look at Customize Firefox controls, buttons and toolbars.
If your home page settings are not saved, see How to fix preferences that won't save.
If you keep getting the "Firefox has just updated" tab every time Firefox starts, see the article Firefox says it's just updated every time it starts - how to fix.
Open each page in a separate tab, select Custom URLs… in the Homepage and new windows drop-down menu and click on Use Current Pages. You can set a group of pages as your home page.
Click the menu next to Homepage and new windows and choose to show the default Firefox Home page, custom URLs or a blank page.
Click the menu button and select Settings.
In the Menu bar at the top of the screen, click Firefox and select Preferences.
Set your home page through Firefox Settings The Home button will be added to the toolbar when a custom home page is set. If you don't have a Home button, you can set your home page through Firefox Settings (see below). You can add or remove the Home button by customizing the toolbar. Anyway, it uses your default search engine. The built-in Firefox home page (screen shot attached) has an address of about:home but since it is part of the Firefox program files it can't be used in other browsers. Note: The Home button is not shown by default. Chosen solution Mozilla does not operate a search engine there's no address of any kind.