I took some sign language classes about twenty years ago and had some interaction with the deaf community at the time, but when the classes ended, I didn't keep it up. I remember little more than the American Sign Language (ASL) alphabet, plus a few things like "more," "thank you," and "finished," which I learned again when my sister started using basic signs with her kids before they could talk. I'm brushing up on my vocabulary over at the ASL Browser. For a quick alphabet tutorial, though, this YouTube video can get you started. (Warning:...