The following brief tutorial will show you how to open multiple web sites, each in their own tab, every time you launch Firefox.
- Open the Firefox Preferences. In Windows and Linux, they can be found by selecting Tools -> Preferences. In OS X, select Firefox -> Preferences.
- Select the Main tab, and in the Home Page: section, enter each site separated by a |
- The next time Firefox starts (or you click the Home button, each site will open in its own tab.