As AI transforms the way we work and live, it brings both exciting opportunities and real uncertainty. How do we navigate this rapidly shifting landscape? One powerful answer lies in AI communities. These groups serve as the "human infrastructure" of the AI age — enabling guidance, shared learning, ethical guardrails, and spaces for innovation. This talk explores how AI communities empower people to prepare for the AI acceleration, featuring a real-life example of an internal community that has grown to over 2,800 members inside a leading entertainment company.