I'd like to create such an affinity group as you linked to, but I'm new to the area and don't have those connections yet.
Anarchist projects or groups would be a great way to get a feel for everything, see collective action and actually be a part of it rather than reading and reading.
Any advice on how to find such groups? I'm planning to visit some teach-ins and a mobile info-shop kind of library, but that's sort of a grasp at straws.
Are there listservs or similar things you could suggest? Idk if those are used much anymore, but the Graeber I've read mentions them a fair amount.