There's hours and hours of NK footage if you search for North Korea Travel / Vlog in simplified chinese. They tend to have much laxer guides/minders, fluent in mandarin vs western travellers with minders with shit English (and I presume more suspicious / cautious). Very few of Chinese vlogs have auto subtitles which can be translated to english unfortunately. Example:
There was a few playlist from central asian travellers and with Chinese business man exploring with more casual minders a few years back but I can't find them. I know a few PRC nationals who made the trip for business, TLDR is NK cities and towns feels like PRC in the 90s with energy of PRC in the 80s. Some of the villages/hamlets seem like PRC from the 70s (which I guess is what most ppl think of NK). Other era reference points probably not helpful for ppl without context of growing up in PRC. So it's worth scrubbing through some of the videos, a lot of it is city and keep in mind NK is 60% urbanized.
They won't let Americans in, except during the mas games, and even otherwise you can usually get in with a Chinese tour group. One of my American coworkers in Beijing went back in 2011 or so, and didn't have any problem, although I got the feeling it wasn't as interesting as she thought it would be.
Educationally speaking, the DPRK would catch up pretty quickly if they were able to liberalize their economy as much as China, even without all the help they could get from ROK, Japan, USA. It isn't Afghanistan (where liberalization wouldn't stick), or even Laos where there is a lot of work to do on modernizing society, which makes its current state even more depressing.
IMO NK in the unfortunate geographic situation where Kim's inherited the half of the peninsula with just not enough ariable land, but not so not enough that juche isn't viable. NK with water access could probably be an alright middle (or even upper middle) income country exporting their 5-10T mineral reserves. They had enough prexisting/rebuilt industry to perhaps even export higher value processed goods + not unserious effort at socialism to avoid dutch disease. Kims playing a solid hand poorly, but the cards are still enough not to fold. Which is sad.
https://www.youtube.com/watch?v=kZgzAquCs-o&list=PLk70D7sV6Q...
There was a few playlist from central asian travellers and with Chinese business man exploring with more casual minders a few years back but I can't find them. I know a few PRC nationals who made the trip for business, TLDR is NK cities and towns feels like PRC in the 90s with energy of PRC in the 80s. Some of the villages/hamlets seem like PRC from the 70s (which I guess is what most ppl think of NK). Other era reference points probably not helpful for ppl without context of growing up in PRC. So it's worth scrubbing through some of the videos, a lot of it is city and keep in mind NK is 60% urbanized.