You can learn most of it nowadays online from sites like Coursera, edx, Udacity, and Stanford's Lagunita. The only exception might be discrete math, but pick u

You can learn most of it nowadays online from sites like Coursera, edx, Udacity, and Stanford's Lagunita. The only exception might be discrete math, but pick up a copy of Rosen or Epps and some Schaum's Problem books and you can pick that up as well.