You look at it every day and probably never use it. No, not your treadmill. I'm referring to that Windows button on your computer keyboard that sits in between the ALT and CTRL buttons on the left-hand side of the spacebar.
What's it for, you ask? OK, you know if you press it it'll open your programs (as if you clicked the Start button on your screen) but there are many other uses for it. Here are some shortcuts you can try: