Wine classes are great, and reading about fermented grape juice is fun. But the best way to learn about wine is to drink it, savor a bit of this and a titch of that. And the best time and place to do that is Wednesday nights at the Riverview Wine Bar, where you can build your own flights. Mix and match from the 40 wines available by the glass, compare and contrast wines made of the same grape on different continents, or an array from one country or state, or all the blends, or whatever. If your exploration is likely to be deep, bring along a designated driver/sipper. 3747 42nd Av. S., Mpls.; 612-729-4200, theriverview.net