Serve 6 wines to someone not used to drinking wine?

Do not even think about doing this unless either you have a designated driver or a great homeowner's insurance policy.

Also, I question how much general information about wine can be learned this way. 6 random wines out of the thousands available? It might be more educational if you were to focus the choices, like 3 zinfandel followed by 3 Gewürztraminer, or 2 merlots, 2 cabs and 2 zinfandels. Hell, I've done winery tastings where we tried 6 Gewürztraminer, going from dry to way too sweet.

Learning about wine isn't done in a single evening, or even a 6 session course at the community college. Those can help you identify broad categories of wine you like, and really, "good wine" is what you like, not what Wine Spectator or NY Times says is good. I've had chardonnay that was $120/bottle and I hated it. I dislike chardonnay in general, but rarely dislike a zinfandel. What I like best is old vine zinfandels from Sonoma County. How did I get to the point where I can be so specific? A father who always let me have a sip from his glass, a couple courses with a master sommelier, and whole lot of weekends in the California wine country getting to know some of the winemakers.

Not everybody cares enough to delve so deeply into wine. For somebody who just wants to learn to enjoy a social glass, I'd suggest making a list of flavors you like, or dislike, and deciding on a price limit, and then finding a quality wine shop (which won't be in Pennsylvania!) and asking to talk to the wine buyer or other knowledgable staff. Tell them about what you like, dislike. Buy a couple bottles to try at home where you can relax and not be embarrassed if you hate it. Find out the suggested temperature at which to serve that particular wine, try it with food, maybe share it with friends.