survey - chime in, please!

I have a friend who cannot go to college at this time - she is neither physically nor financially able to attend at this time - but she really wants to learn, improve, and expand her horizons & knowledge.

I have already suggested to her that she read the Harvard Classics & the Newberry books for Juvinile fiction.

So, my dear readers, I/she would like your help - what could you suggest to her to read to educate herself?