You can open that page in a tab and drag the Site Identity Button button (left end of the location bar) upon the toolbar Home button and confirm that you want to set the page as the home page.

See:

• Tools > Options > General > Startup: Home page
• https://support.mozilla.org/kb/How+to+set+the+home+page

Sorry. I have no clue what I'm doing. Can you call me at (Phone number removed by mod)? I just want to restore Xfinity Comcast as my home page with "My Favorites" and remove Foxfire as primary page. I got to "General>" but I don't know how to open page in tab and drag the "Site ID Button". I don't know where the toolbar Home button or Site Identity Button are. Helen Mullane

First, no, we don't do phone support (nor does any free software program). This is our support site.

If you would like to have comcast as your home page, please do the following:

1. Click the Orange Firefox button in the upper left hand corner of Firefox, then click Options.
2. In the Home Page field, delete anything that is there and put in www.comcast.net. Then click OK.

This is called changing the Home Page, and you can read more about it (including screenshots) at How to set the home page.

Also, you need to update Firefox. Please read Update Firefox to the latest release for information on how to do that.

You can open the desired Comcast page in a tab by typing (or pasting) it's URL in the location bar to confirm that you are on the right page.
Then you can either paste that URL as the Home page in Options > General or drag the little icon on the left hand side of the location bar on the Home button that should be at the far right end of the Navigation Toolbar to set that page as the home page.

Tylerdowner answered my question in a language I could understand. Sorry cor-el, you didn't speak my language. hmullane