Organized does not necessarily mean brimming with marketing material about their organizational structure. Antifa obviously has members and planning. They make great effort to counter who they perceive to be their political rivals. Analyzing from the outside, I imagine they would prefer their structure remain as opaque as possible for pragmatic reasons. I can’t point you to a “starter link” of my local Catholics; yet they exist and are organized.
Your curt inquiry should be directed at journalists, who for whatever reason are delinquent in their duty to investigate this organization.
So was your comment supposed to be cute? An invitation to a purported dead-end investiture? I assume you think yourself adjacent politically to Antifa. I find that most “fellow-travelers” tend to be the most vocal defenders of them online. Would you be this cavalier and flippant if your political rivals were doing the same thing Antifa is doing but for the opposite political “team?”
Just a thought.