Good to see you’re still around!
The easiest thing to say is that particular law only applies within whatever level issues it. If you neither attend nor are a member of a given level’s faithful, you needn’t worry about their canon law.
Laymen never have to directly deal with the rules of the various orders unless and until they join them or are in parishes run by them.
Which leaves the Bulls and Moto Proprio letters… Most of the ones not already included are online at vatican.va, under papal letters.
And Ruthenian particular Law for the US Metropolia is online over at ByzCath.org.
I have seen no commentaries upon it online… and the one JCD/JCOD we know has been defrocked…