If you want to learn to throw a dinner party a la Julia Childs then head over to Williams Sonoma this month for free French Culinary lessons . Each month W & S offers a different free lesson so contact your local store to get the schedule of upcoming events . More info available here
In Las Vegas you could also learn some things about cooking at The Cook's Toy Store Call for class times and upcoming events.
Michael's offers free chocolate making lessons for adults and kiddos a few times a year, not to mention free craft lessons throughout the year.
Or you can hostess a Pampered Chef party and have a fun ladies night learning to cook delicious easy meals. I can testify to the wonders their stoneware does for any meal and September is stoneware month , save 60% if you are a hostess ! In Vegas I suggest my PC consultant Laurie http://www.pamperedchef.biz/LaurieMyers