[grayhatter]

Encryption is impossible* after the fact. The most important thing you could do today is read! Learn as much as you can. figure out the basics of both operational security, and bootstraping encryption. Then, and here's the important part, share everything you've learned as widely as you possibly can, write guides, write tutorials, make videos. All of information you need is available, but if the people you want to communicate with don't know it, or don't have access to it. It doesn't help either of you.

[refulgentis]

Thank you this is wise: is there anything more specific than that you could offer?

After double-checking, OP didn't ask to encrypt things from the past, and "read and share" isn't quite going to help get someone started, sort of becomes a catch-22 at that point. I really hope there's some info to offer people who don't have tech experience. It'd be a lot to ask to acquire a tech background then a security-specific one, especially if all we can say is "read"

[grayhatter]

Impossible but only for some definitions of the word. Put more simply it's much much easier to have it *before* you need it.