Infosec Bytes is a series of easy-to-understand videos explaining how to protect your privacy. You can follow at:
They are made by the Centre for Investigative Journalism in London, and are originally intended for journalists, but anyone can use them.
For example, here's their video explaining Signal messenger:
This is a brand new server run by the main developers of the project as a spin-off of mastodon.social It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!