Sailing with a buddy

Took a friend sailing who had never been on a sailboat before.  Wind was blowing 18 knots true, so we reefed the main and went out with just it and stayed around in little round bay, with her steering and me handling the lines.  Wind dropped to 12, so we rolled out the genoa and our speed doubled, and she then understood what this was all about.  She marveled that we could go so fast downwind but without the air rushing past, as well as how she could 'see' the wind by steering to the telltales, which she got really good at.  Such a fun time!