Join the discord https://discord.cofunctional.ai
Obviously an early line of research won't have anywhere near the depth, but as an example the geometric algebra community has done a great job of this. Lots of 10 minute videos to 2 hour lectures. Steve Brunton's videos are another example "learning ML math" resource that has helped me a great deal.
Edit: I also just found https://bivector.net/ Holy crap. So good.
That said, Adam tends to follow a very precise and measurable interaction selection path with many people regarding some of his work and the discord, so I also just see it as how he interacts with others.
But yes, agreed, I wish I had a human-understandable resource that a mortal of my own kind of flesh could more easily grok. Even the 'for absolute beginner' online tutorials are a swamp of symbology and prior assumptions, and it doesn't even seem to be that terribly difficult of a concept on the whole, at least for the basics of it.
Just my 2c, lots of good and mixed for us all in this crazy road we call life! <3 :D :)))) :D