If you believe that the truly educated never graduate, then I'm still a student. Certainly, I read a lot. And my interests are sufficiently eclectic (and my patience sufficiently short) that even the library at Greenback won't fill my needs. Still, a lot of the books I'm interested in are (or have been) used as teaching texts. And if I'm reading for my own purposes, I don't need the latest edition. So, I buy used. And cheap. Which usually means online.