creaturelyme
It's a free, accredited online university. All course materials are OER. If you wanted the actual degree, you'd have to pay $60, I think, at the end of the course as an exam fee. Otherwise, just take the course for free.
If I remember correctly, they've got 4 focuses: business (bachelors & masters), computer science (aa & bachelors), public health (aa & bachelors), and education (masters).
You have to enroll to get access to the courses, and I don't know if you can enroll in courses outside of the degree. I actually enrolled a while back as a part of a career change, but almost immediately realized I wasn't going to do anything thing a business degree would help me with. I realized I could access the syllabi and textbooks without actually enrolling or re-applying, so I've worked through a few courses in each area (I get distracted lol).
The application costs, I think, $60 and is really pain free to submit (doesn't require any of the usual things...it's meant for the kind of person that would struggle to provide those).
The courses are designed by people at the top of their field, almost all full professors at Ivy-league-caliber university. Then, the courses are taught by volunteers who get a small amount of money for each course. So if you get stuck, you have a professor to ask, plus discussion posts are likely part of all the classes.
...that's why I like the Frost poem ("The Mending Wall") better the Chesterton quote. It typically gets read in a way that makes little sense, but the speaker took down a portion of the wall because the wall wasn't walling anything in or out. But he realizes while taking it down alone the same thing his neighbor knows and refuses to question..."Walls make good neighbors." (they hang out once a year, spending a day wearing themselves out to repair it, but the speaker can only recognize how hard it is to mend the wall, not how much he enjoys that day. Until he works taking the fence down by himself)
No one can truly do what the blog suggests. Humans are far less rational than we like to admit about ourselves. If they realize why the code reviews were originally implemented and change back the usual way of doing things, then the whole process works. Most of the time you gotta take down the wall to realize its real value (or confirm its lack of one)