PowerPoint is a presentation program used to support oral presentations through slides that can incorporate text, graphics, video, and animations. It can be used to create slides and handouts, present graphics and video, generate posters, conduct interactive tests and quizzes, introduce units of work, and present assignments like storyboards, timelines, student portfolios, and group assignments. Presenters should not write out their entire speech on slides, overload slides with too many ideas or animations, or use hard-to-read fonts, and should always summarize their key points.