The only way to understand art is to go to a museum and look at it , French painter Renoir suggests. But once inside, this is easier said than done. What do you do when the label simply reads Untitled, 1973 ? Where to look when a painting offers you a picturesque but undisguised view of a giant vagina? And how to react when the museum guard stares at you for far too long? How to Visit an Art Museu..