Hi, Poetmom. I second Roland’s suggestion. You might also look at the ifiddle app…some good articles in there.
And I really like the approach of learning the stories behind the songs….
MOC did a project a while back (I think) called Strings and Threads. I don’t know if it was just something he was kicking around or it it actually went to production…but basically, it was a musical journey via tunes from one genera to the next…lots of Celtic/Scottish influences and songs as they ended up influencing Appalachian music. You might do some searching to see if that’s out there.
Cheers!!
C