This is very cool:
There are a bunch of nice computer science classes online from MIT: Free online MIT computer science classes
Here is an introductory computer science class: Intro to computer science
Here is a graded version of the same class on edX: Graded version of MIT intro CS class starting June 10th.
edX does not have as many computer science classes but edX may motivate students because edX classes include grades and certificates for those who pass.
I use computer science every day in my database work but I have not taken a formal class since 1989.
I have been on a computer science kick ever since watching The Imitation Game. I downloaded Turing’s 1936 paper after watching the movie. I got about halfway through it before giving up. It was dense! Maybe will take another stab at it some day. But, the MIT classes are neat because they are the way computer science is now taught, and hopefully they are easier to understand than Turing’s paper.