If you forget everything else, keep this. None of it was ever really about the wine.
It was about the table. The grapes, the regions, the structure, all of it is just a way of paying closer attention, and attention is a form of love, whether it's aimed at a glass or at the person sitting across from you. You learn a little about wine for the same reason you learn to cook something properly, set a table, or remember how someone takes their coffee.
Go back to Cana one more time. The wine ran out, and the celebration was about to go downhill. Christ stepped in, not only as a part of the greater story, but in the moment, so the party could carry on, so that the joy continued. That tells us something about what all of this is for. From a wedding to the cross, wine playing a role the whole way through.
So here's the only homework that matters. Buy a bottle, nothing expensive, something from this course you're curious about. Open it slowly. Pour it for someone you love. Put your phone away. And let the evening run a little longer.
And if something in this stirred you, the bigger conversation isn't really about wine at all. It's about hospitality, about building a home that people actually want to sit down in, the kind of family and table you might be called to invite others into.