You can open last closed tab in Internet Explorer, Firefox, Google Chrome and Opera browsers by using the shortcut Ctrl+Shift+T, very useful! Isn’t it? Similar one, not known to many users is Ctrl+Shift+N shortcut, which when used, reopens the last closed window in Firefox and Internet Explorer browsers.
Here are the other keyboard shortcuts you may find it useful for Firefox
Ctrl+Shift+P – opens a new Private browsing window
Ctrl+D – bookmark this page
Ctrl+Shift+I – open Web developer tools
Ctrl+Shift+A – opens add-ons manager.
Have you found this shortcut for Firefox useful?