Giotto's 1305 Lamentation
A friend who is aware of my interest in art and art history mentioned to me the other day that he has always regretted not having taken at least an intro art history course in college. (Where I went to college, intro Art History and Intro Music History were required courses. Good, but very demanding and well beyond cocktail party art conversation.)
I told him that this regret was easily remedied, at the cost of some time but for very little money. Here's what I suggested:
For starters, these two from Great Courses (the old Teaching Company)
How to Look at and Understand Great Art
A History of European Art
After that, some of these Rolf Toman books are each a college sememster in themselves.
Then, for icing on the cake, it's fun to delve into the great E. H. Gombrich