There is a new onboarding site here that gives you the basic rundown of how things work and why https://start.njump.me/

There are other sites too. It's a steep learning curve right now, but apps like Damus or Primal make it pretty easy to just use like a traditional social media, without worrying about the nitty gritty, and you can learn as you go and adjust your app usage as you find new things you like.