Just found today a great discussion thread in The Joel on Software Discussion Group: Best tips that no one seems to know about. Basically, the whole thread is a collection of various simple Windows tips and tricks - mostly some interesting hotkey combinations. The conversation also mentions several quite useful links:
Firefox keyboard shortcuts
Windows XP keyboard shortcuts
117 run commands in Windows XP
Now, the only question I have is: how should I memorize all of these cool key combinations - or, at least, the most useful ones? Probably I should create some kind of printable list of my favorites and put it on my wall.
Technorati tags: tips, Windows XP, productivity