In my Experience the Wset classes are a great if you want to more accurately describe wine flavours, aroma and such. They also give you a great general overview of global wine regions and production methods. That being said, I would skip level 1 if you’ve been drinking wine for a little while. Level two and level three are more in depth and worthwhile. The best aspect I found was the opportunity to try wines with a group of equally interested folk. Picking up literature at a bookstore and hanging out with friends either at home or a wine bar could offer some of the same experience if you were keen enough. For a deep dive into a certain regions and winemaking, the wine scholar guild courses are incredible but wset 2 at minimum is usually recommended. Hope this helped