Instructions
TAB RESTORE
How to Use
To use Tab Restore simply locate where the Tab Restore icon is on your toolbar. Then, the next time you accidentally close a tab, you can just hit this button and it ill open the last tab up for you. You can restore up to 99 tabs but by default, it saves up to 10. If you wish to select which tab you wish to restore you can click the little drop down menu. From the little drop down menu you can also choose to “restore all tabs”.
Options
In options (tools > add-ons > tab restore > options) you can customise where the button shows, whether you want to show the history list, if you want it to show in the firefox context menu and how many tabs Tab Restore will remember for you 
Disable
You can disable Tab Restore by going Tools > Add-ons > (Find Tab Restore) and click Disable.
Uninstall
You can uninstall Tab Restore by going Tools > Add-ons > (Find Tab Restore) and click Uninstall.
