Click Tools, Internet options. ...The Internet Options window will open. ...Click Apply, OK to close the window.Click the wrench icon in the top-right corner of the browser.Select Options.In the 'On startup' section, select Open the home page.options window will open. Go to the Startup section and select When Firefox starts: Show my home page.. In the Home Page field, type in the website address you want to use as your home page.Click OK.