Start with “absolute beginner” courses. Here’s one from Bob Taylor. He puts out a lot of good stuff.

Sit your self down and study it for a good bit, then build some things. https://youtu.be/0QUgvfuKvWU

When we went through a family tragedy the big lasagna was amazing. We didn’t have to find or worry about anything and we could just do it on autopilot.

Edit:typo

I use one for travel abroad and wireguard/open vpn connections. I just set up another at home as a server and I’m thinking of setting up tail scale and maybe getting some services running. They’re good devices.