You probably thought you knew all of these tech tips, but I bet there'll be at least one that you'll find useful. In my case, as someone that always trie to use the keyboard instead of the mouse, I never new you could use shift-space to go back up a page in a browser. Handy!
Here's one I'd add to the list: you can use alt-TAB to switch to a different application (or cmd-TAB on a Mac). I'm always surprised how many people don't know that one.
Enjoy your weekend!