How many of these do you use?
F1: Open up help in the program that you are working in.
F2: Renames a selected object such as a file or document.
Winkey +D : Brings your desktop to the top.
Winkey +M : Minimises all windows on the desktop.
Winkey +L : Locks your computer screen.
Ctrl Alt Down: if winkey+L has not been used !
