The life of the philatelic hobby has moved online. Eventually, everyone will get it. For how that will finally happen, see Thomas Kuhn’s “The Structure of Scientific Revolutions” (1962; second edition 1970; third edition 1996; fourth edition 2012).
Punk Philatelist (sorry! Not YouTube channel, but he’s all over other people’s videos so search him out anyway. Here’s his website: https://punkphilatelist.com/
