windows key+m will minimixe all windows no matter how stuck your comp is soo you can see how this will help

windows key+d will display the desktop no matter how stuck your comp is naturaly its the same as windows key+m

windowskey+L itle log you out of computer instantly

windowskey+shift+M restores all minimised stuff

windowskey+R open run 

fr those who dont know the windows key well in a normal keyboard its the button netween ctrl and alt its like this button  also theres a pitcure of it 

hope you find this useful

also i forgot to mention windowskey+E wich opens my computer