Shortcuts for Firefox

Ctrl + Tab or Ctrl + PageDown:   Cycle through tabs.
Ctrl + Shift + Tab or Ctrl + PageUp:   Cycle through tabs in reverse.
Ctrl + (1-9):  Switch to tab corresponding to number.
Ctrl + N:    New window.
Ctrl + T:    New tab.
Ctrl + L or Alt + D or F6:   Switch focus to location bar.
Ctrl + Enter:     Open location in new tab.
Shift + Enter:      Open location in new window.
Ctrl + K or Ctrl + E:     Switch focus to search bar.
Ctrl + O:    Open a local file.
Ctrl + W:     Close tab, or window if there’s only one tab open.
Ctrl + Shift + W:    Close window.
Ctrl + S:     Save page as a local file.
Ctrl + P:     Print page.
Ctrl + F or F3:     Open find toolbar.
Ctrl + G or F3:      Find next…
Ctrl + Shift + G or Shift + F3:     Find previous…
Ctrl + B or Ctrl + I:     Open Bookmarks sidebar.
Ctrl + H:     Open History sidebar.
 Escape:       Stop loading page.
Ctrl + R or F5:    Reload current page.
Ctrl + Shift + R or Ctrl + F5:     Reload current page; bypass cache.
Ctrl + U:    View page source.
Ctrl + D:    Bookmark current page.
Ctrl + NumpadPlus or Ctrl + Equals (+/=):    Increase text size.
Ctrl + NumpadMinus or Ctrl + Minus:    Decrease text size.
Ctrl + Numpad0 or Ctrl + 0:      Set text size to default.
Alt + Left or Backspace:    Back.
Alt + Right or Shift + Backspace:   Forward.
Alt + Home:    Open home page.
Ctrl + M:    Open new message in integrated mail client.
Ctrl + J:      Open Downloads dialog.
F6:     Switch to next frame. You must have selected something on the page already, e.g. by use of Tab.
Shift + F6:    Switch to previous frame.
Apostrophe (’):    Find link as you type.
Slash (/):     Find text as you type.