Hey @DavidL What you’re asking about is commonly referred to as a “digital garden” for public learning. I had some trouble wrapping my head around it, so I have a post that you may be interested in reading. There were some excellent contributions to the post, which you can find here: Understanding digital garden creation with Obsidian. Particularly helpful to me was the detailed comment by @ShaneRobinson, which you can find here.
As @icouto said, a public publish feature is on the development plan and given the speed at which the Obsidian devs are working, I imagine it will hit beta within a few weeks. But the above post may give you some options in the meantime.
I have opted to wait for Obsidian because I really want to support this platform, although I may try an alternate approach for learning purposes.
Here are a few related links you may want to check out, as well:
Public Note Collection Examples
Curated list of Public Zettelkastens / Second Brains / Digital Gardens
“Obsidian+Github Pages” for digital gardeners?