MartinMotycka Once again, I much appreciate the help. I do have some followup questions, as I still have many points of confusion.
Before I get to the followup questions, I tried something new today, creating an app. I was moderately successful, but it was yet another rather painful experience. I thought it would be helpful for me, and perhaps others, to document what I did, discovered, failed at, etc. I humbly suggest that the level of detail I've tried to include could be helpful to those, like myself, that are just getting started. The document includes some more questions/mysteries, and also includes some helpful info (an appendix) on resetting and reconnection to the hub. I'd be willing to update/polish that if it would help "the cause". Sadly it is too big to attach; this is the Google drive link.