I just now discovered that vimtutor exists. Is it weird that going through it makes me feel more like a hacker than writing actual code?
I did the same as you, I went to mastodon.social. Then I went on a bit of a tour to two or three other instances trying to find a good mix of technology and social activism. Landed at mastodon.social... My follow timeline and the federated timeline are the same, but the local conversations are more my speed.