I think there will be some sites like books, they are timeless. And Rosalind is one of them. I'd add Philip Greenspun's /books (http://philip.greenspun.com/book

I think there will be some sites like books, they are timeless. And Rosalind is one of them. I'd add Philip Greenspun's /books (http://philip.greenspun.com/books/ http://philip.greenspun.com/books/)