what home page? yahoo where? how is firefox involved? got a screen shot?

If you had the Home button (house icon) on your Firefox toolbar before but it is gone now, try the Customize feature to find that button and drag it to the toolbar in your preferred location: [[Customize Firefox controls, buttons and toolbars]]. If that button no longer takes you to Yahoo, please try the steps in the following article: [[How to set the home page]]. Or you could use an add-on (I don't know what the difference is between them): https://addons.mozilla.org/firefox/user/1947/ If you have lost your "My Yahoo" page, that is because Yahoo got rid of that page. If you need an alternative, you could try a general web search, since there has been discussion about that on other sites, forums, blogs, etc. Be cautious about signing up with new companies until you can verify they are trustworthy.