Yup, there is always something to learn, including recognizing ridiculous BS marketing when you hear it.
My rule of thumb is the flashier the label on the bottle, the crappier the wine inside probably is. Not always true, but beware of the $15 bottle with a really bright or elaborate label.
Other than that, the best wine is the one you like and don't worry if it's cheap. My go-to white in the summertime is a viognier that I get for a measly 8 bucks a bottle.