The British section of the IOT, the oldest chaos magic magical order. The site has essays, event listings, membership information, and a record of the section's work. Closest thing to an official entry point for the order.
Chaos Current / Communities
Communities
Places to talk about magic with other magicians
Reddit's main chaos magic subreddit. Highly uneven but the largest general discussion venue online. Beginners asking first ritual questions, long time practitioners trading techniques, debate about whether something counts as chaos magic.
Reddit's broader occult subreddit. Larger than r/chaosmagick and less focused, but useful for context, questions that cross traditions, and access to a wider practitioner pool.