Structure and Interpretation of Computer Programs is a classic for a good reason. And it's available online: http://mitpress.mit.edu/sicp/full-text/book/book-Z

Structure and Interpretation of Computer Programs is a classic for a good reason. And it's available online: http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-4.html http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-4.html You can get a lot out of SICP, if you take the time.