Forget the warm fuzzies of open source software, forget the security, forget the rest. Think about what privacy means when it comes to free speech. If you are going to be critical of the government, or facebook, or Microsoft, Apple, or anyone else who has power -- then you are going to need privacy, and you won't get it from Microsoft or Apple, whatever their marketing tells you.
Kraut & Tea Stastibook: https://www.youtube.com/watch?v=WUmN8...
Feds Arrest Kickass Torrents Owner: https://torrentfreak.com/feds-seize-k...
To learn more about Linux, just type it into google :) If you are new to Linux, I'd say go for Ubuntu -- its what I use (sometimes Archlinux, but that's not user friendly), although I've ran pretty much everything. over the years. I only use 100% free open source software to make my videos -- OBS for recording the video, Kdenlive to edit it. There are alternatives though. Sorry, no Final Cut Pro or Adobe Premier 😞
Open Broadcaster: https://obsproject.com/