North Korea doesn't have access to the open internet, so no learning materials are 'freely available' online. All computer access is gated through the countries own locked down Linux distro 'Red Star OS', and all internet access is blocked.
There are effective North Korean hacking teams. They seem to operate from China, but one assumes that there are ways to train North Koreans in this stuff before sending them abroad to do the work.
I will agree that for most people in North Korea access to the outside internet is limited, but your claim that "All computer access is gated" is a stronger one, that I haven't seem evidence for.
Also, we know that Red Star OS exists, but I haven't seen any information about it's actual use. I can imagine it's used in certain sectors (e.g. education or certain ministries), but if you have information about it's usage I'd be interested to see that.
My gut feeling is that there is probably still a lot of cracked windows PCs also used in industry, but I have no evidence for that either. This is just based on how in my experience China works, and the fact that there is some business exchange between North Korea and China.
It’s still freely available online. So their government can pick and choose what they think is necessary for educating their hackers / programmers / developers.
I was a whole lot better at reading the manual before the internet .
