YouTube videos are short or long clips that can be uploaded and shared on the YouTube platform. They cover a wide range of topics, including entertainment, education, tutorials, and vlogs. Users can watch, like, comment, and subscribe to channels, creating an interactive experience. Creators can monetize their videos through ads, sponsorships, and merchandise. The platform allows anyone with an internet connection to share their content, making it a popular space for both amateur and professional creators. YouTube has become a significant source of information and entertainment for millions of viewers worldwide.