Have you seen Metacademy? Here is a "tech-tree" for recurrent neural networks [0]. In the top-left corner you can switch between "graph" and "list" mode. Unfortunately, site hasn't been updated for some time. However, they have open sourced their code and I was thinking maybe we (volunteers) could pick up where they left off and continue this initiative. Previous discussion [2].
This seems like an amazing concept and I have been thinking of it ever since I saw KhanAcademy knowledge tree.
I can see this being combined with Arbital's Lens (Same thing explained in multiple ways - from a simple explanation for a 10-year-old to a rigorous explanation for a mathematician)
I always considered this the best way to actually progress in my learning and I still see it as the next big thing after Wikipedia, once it's done correctly.
No I have not seen this, but it looks awesome and like a great place to start. This structure is pretty much exactly what I envisioned at a high level. It would be even more useful if there were a finer degree of granularity between concepts, and each vertex actually directly linked to a video. I think the killer feature for a partially ordered learning resource is going to be keeping people within the ecosystem (i.e. watching embedded videos or reading embedded articles/guides/etc.) so they can grind out on your website, not repeatedly have to go to other websites where they may get distracted or become reluctant to return to the original.
Edit: added previous discussion to the list.
[0] https://metacademy.org/graphs/concepts/recurrent_neural_netw...
[1] https://github.com/metacademy/metacademy-application
[2] https://news.ycombinator.com/item?id=7617683