Reddit works by organizing content into subreddits, each dedicated to a specific topic or interest. Users can create posts, comment on threads, and vote on content, influencing what gets promoted to the top of the feed. Each post can include text, images, videos, or links to other sites. Subreddits are moderated by community members, ensuring that posts stay relevant to the topic. Reddit also allows users to interact through private messages, follow specific users, and join multiple subreddits, fostering engagement across the platform.