@trombone Understood.
VLANs are kinda stupid easy to learn and use. I'm kicking myself that I waited so long to try, and then eventually implement and use. The hardest part I found was keeping the terminology between the manufacturers of networking gear straight - one of them calls it trunks, the other one calls it tagged or untagged, another one calls it access, another one calls it something else, etc. Once you grasp those terms and how they're used, it makes good sense. Programming your managed switch is the other variable that was new to learn, but not too difficult.
This is a good basic explanation of the concepts:
https://www.computernetworkingnotes.com/ccna-study-guide/vlan-basic-concepts-explained-with-examples.html
Good luck!
Jeff