I would like to connect a List and a Library in a way that when I select an item in the List, the Library will display files that have tags related to selected item. So let's say that I have a List added to the Page on the left, I'm selecting an item and the Library on the right displays all documents corresponding to this item.
I think it would be fairly easy to achieve on SP 2013. Thing is, I'm working on SPO and I have no idea where to start.
Can anyone give me some advices on that? Preferably in a simplest possible way.