Useful Firefox keyboard shortcuts
CTRL+E or CTRL+K: focus search box
CTRL+L: focus location box
CTRL+J: toggle downloads window
CTRL+U: show page source
CTRL+B: toggle del.icio.us bookmarks in the sidebar
CTRL+H: toggle history in the sidebar
CTRL+D: add a del.icio.us bookmark
Basic shortcuts:
F11: toggle full screen
CTRL+T: open new tab
CTRL+W: close current tab
CTRL+F: find on page
CTRL+PGUP: previous tab
CTRL+PGDOWN: next tab
CTRL+P: open print dialog
ALT+LEFTARROW: back
ALT+RIGHTARROW: forward
ALT+HOME: home