Parcival, thank you so much for this great suggestion! I will definitely "page" Tdub.
Thanks again to everyone for the helpful suggestions! I really appreciate it. I am a member of a couple of Meetup groups that meet causally for wine (happy hours and such), so I have started talking to them about doing a more formal tasting (for the classes). There is some interest, but it is hard to find people who really want to learn about wine, not just drink it, haha!