Firefox tab keyboard shortcut

Ctrl+T: opens a new tab
Ctrl+1: Switch to the first tab
Ctrl+2: Switch to the second tab
Ctrl+3: Switch to the third tab
Ctrl+4: Switch to the fourth tab
Ctrl+5: Switch to the fifth tab
Ctrl+6: Switch to the sixth tab
Ctrl+7: Switch to the seventh tab
Ctrl+8: Switch to the eighth tab
Ctrl+9: Switch to the LAST tab
Ctrl+=: Zoom in
Ctrl+-: Zoom out
Ctrl+0: Reset the zoom to normal