And even more...
One thing about the organizations below is that their courses tend to be "YouTube heavy," which is fine except I personally find it easier to refer back to printed material. I usually watch the video once all the way through to get the jist, then go through it again, pausing often, to take notes.
www.udacity.com/
All the courses are free if you don't want/need college credit, but for many of them you can fork over 150 bucks to seek credit from San Jose State U.
www.udemy.com
Not free, but not expensive.
www.khanacademy.org/
www.coursera.org/
