YouTube is a video sharing website where users can upload and share videos. Users can create playlists of videos on specific themes for educational or research purposes. To set up an account, users go to the YouTube website and create an account with a simple registration process. Account settings allow users to manage their uploaded videos, favorites, and curated playlists. Basic functions for watching videos include searching, selecting a video, and using playback controls. Users can also like or favorite videos, add videos to playlists, embed videos on other sites, and get help from YouTube support pages.