YouTube channels are individual accounts on the YouTube platform where users can upload, share, and manage their videos. Each channel can focus on a specific theme or topic, such as gaming, cooking, or education, allowing creators to build a community around their interests. Subscribers can follow channels to receive updates when new videos are posted. Channels often feature playlists, which organize videos into categories, making it easier for viewers to find content they enjoy. Popular channels can gain millions of subscribers and views, leading to opportunities for monetization through ads and sponsorships.