https://organizing4power.org/ find 10+ comrades and sign up for a course, that’ll help a ton. Though their courses are more about how to strategize and actually talk to people to get to winning actions.
It can be a good way to bring focus to a group of people (or to have a clear starting point for a group of people that’s “just learning” and not immediately putting themselves at risk). Just walk up to people you trust and offer to take the course together, and tell them to find others who might be interested, and take it from there.
Fighting against the man is always anti authoritarian, and that’s a big part with them, too, obviously. I honestly think if you set the bar at a union that wants to abolish capitalism (add in the blanks what that means), then you’ll not be pressuring & negotiating with the bosses, but couping. Or something like that. That’s a different game, isn’t it?
Anarchism != not being organized, and strategising, learning how to talk to coworkers to organize and mobilize them, can be applied in any context, be it a more hierarchical or a flat one, I’d say. They mostly focus on closed structures rather than elected groups (i.e. groups people just tend to be a part of, like an apartment building or employees to the same company vs rallying people for an anti-racism protest).
As for that they don’t organize any basic ones soon, just gives you more time to get people together or so, time flies (though that doesn’t help if you really need to get started asap). It’s worldwide & hugely inspirational and think it’s valuable for more & less mature groups alike.
Hope that helps!