You know it's funny, I spent hours poring over books of art when I was a kid but I tell myself "I don't know anything about art". I guess because if you don't remember dates and names and facts and mostly just remember how something makes you *feel* that's "not knowing anything about art".
That is a backwards perspective. It's not that all the details are unimportant, but if you never engage with the piece of art itself on its own terms, *that* is not knowing anything about art.