Thnx, this connects some important dots for me after trying to understand nostr for a while with 2 decades as software eng. and CTO. It's complicated even for me.
would like to suggest a slightly different approach where onboarding is per user need simply explained for non tech ppl.
E.g: create a total private relay to friends. how to host it(aws, raspberryPi, smartphone, PC, paid dedicated service provider, free s.p. ?...) how hey join,
or rellay for group of simmillar interest like scuba diving destinations,
or zaped cooking recipes. setup digital wallet , buy sats get paid for your recipes.
hope it makes sense, will be happy to assist once I'm in the saddle