BBS: The Documentary
This is a brilliant documentary about the history and culture around the dial up BBS's that in many ways was the precursor to the internet as we know it today. It's long but definitely worth it! (I originally watched it as episodes, but this one has been stitched into one long one!)
https://vidcommons.org/videos/watch/bff55f3a-42f0-43f4-b3b6-b7d882524d13