Top Firefox Shortcuts

alt+d Jump to the address bar
ctrl+enter Complete a .com address in address bar: adds "http://" prefix and a ".com"-suffix, then loads the page.
alt+home Jump to homepage
ctrl+t Open new tab in same window
ctrl+shift+t Undo close browser tab
f5 or ctrl+r Reload page

     >> complete list of firefox keyboad shortcuts

Top Excel Shortcuts

ctrl+spacebar Selects an entire column in a worksheet.
shift+spacebar Selects an entire row in a worksheet.
ctrl+1 Displays the Format Cells dialog box.
ctrl+a Selects the entire worksheet. If the worksheet contains data, CTRL+A selects the current region. Pressing CTRL+A a second time selects the current region and its summary rows. Pressing CTRL+A a third time selects the entire worksheet.
ctrl+shift++ Insert a new row or column (after the current row is selected with shift+space, or column is selected with ctrl+space

     >> complete list of excel keyboad shortcuts

Top VLC Media Player Shortcuts

ctrl+f Open folder (browse folder menu)
ctrl+arrow up / ctrl+arrow down Increase or decrease volume
f Switch to/from fullscreen
m Mute and unmute audio
space Pause or play movie

     >> complete list of vlc media player keyboard shortcuts