From Firefox help (v3, but should be similar to older versions)
Setting the home page
There are three ways to add set your home page.
Typing it in manually
1. At the top of the Firefox windowOn the menu bar, click on the ToolsFirefoxEdit menu, and select Options...Preferences....
2. If it isn't already selected, click the Main icon. The Main options panel is displayed.
3. In the Startup box, highlight the text in the Home Page: box. By default, this will probably say
http://en-US.start.mozilla.com/firefox? ... S
fficial
If you are not using an English version of Firefox, this may be slightly different.
4. Replace the text with the address of the website you wish to be your new home page. For example, to set your home page to Yahoo!, enter
http://www.yahoo.com/
5. Click OKClose the preferences window.
Use current page button
1. Navigate to the page you want set as your home page.
2. At the top of the Firefox windowOn the menu bar, click on the ToolsFirefoxEdit menu, and select Options...Preferences....
3. If it isn't already selected, click the Main icon. The Main options panel is displayed.
4. Click on Use Current Page.
* If you have a group of tabs open, the entire group of tabs will be set as your home page.
* You can also use the Use Bookmark button to set one of your bookmarks as your home page.
Dragging it to the home button
1. Navigate to the page you want set as your home page.
2. Click on the icon to the left of the web address and drag it to the Home toolbar button.
Making Multiple Home pages
Firefox allows you to make multiple home pages. When starting Firefox or navigating to the home page it will open multiple tabs, depending on the number of home pages specified.
1. At the top of the Firefox windowOn the menu bar, click on the ToolsFirefoxEdit menu, and select Options...Preferences....
2. If it isn't already selected, click the Main icon. The Main options panel is displayed.
3. After the ending of the current homepage put | and than start your next homepage.
* For example:
http://www.yahoo.com/|http://www.mozilla.com/
4. Click OKClose the preferences window.
Setting the home page back to the default
1. At the top of the Firefox windowOn the menu bar, click on the ToolsFirefoxEdit menu, and select Options...Preferences....
2. If it isn't already selected, click the Main icon. The Main options panel is displayed.
3. In the Startup box, click Restore to Default.
4. Click OKClose the preferences window.