Hi there,
I've always been a bit of a keyboard freak - a mouse (white) is something my kids have in a cage :-)
Jokes apart. Pressing Alt-Space you get the small menu for minimizing, maximizing, restoring and closing the active window. As well I've found Alt-F4 extremely usefull for those pop-up windows that moves all over the place.
I've got more weird short-cuts on stock, but then I would have to start thinking - and THAT'S difficult, I'll post more when I remember.
Regards from Spain