Well the material that the authors have collected on teachyourselfcs.com is: 1) free 2) taken from outstanding courses at Berkeley, Stonybrook (the illustriou

Well the material that the authors have collected on teachyourselfcs.com is: 1) free 2) taken from outstanding courses at Berkeley, Stonybrook (the illustrious Steven Skiena), MIT and Stanford. As I see it, this is evidence that those schools have some good courses. Graduate systems courses are pretty great as well, and of course you can hit other areas such as computer graphics, AI/ML, etc.. For formal education, I'm a bit biased toward multi-year programs (because it takes a while to learn this stuff) and schools (like those above) with good CS courses. But there's nothing to say that the authors' unaccredited graduate program is bad - based on the above I'd expect it's probably decent, although I worry about the 15 hours x 52 weeks though because I don't think that's enough time. In my experience a good systems or engineering course takes about 200 hours.