Hi there I have found an article that will help you out! I hope this helps! Have a good weekend https://support.mozilla.org/en-US/kb/how-to-set-the-home-page

''<p>vickielynmitchell@gmail.com [[#question-1471423|said]]</p>'' <blockquote>How to make Firefox my startup page every time I open my computer. </blockquote> Firefox is a web browser and not a Homepage or a search engine. You can have Firefox start with one or more sites as your homepage. If you want two or more sites to open then see https://support.mozilla.org/en-US/kb/home-page-pipe-character-opens-extra-tabs-firefox