PowerPoint is a Microsoft program used to create slide presentations. It allows users to add text, images, video, audio, and charts to slides. Key PowerPoint terms include the ribbon, slides, slide layouts, slide views (normal, sorter, show), themes, and transitions. Themes control colors, fonts and effects, while transitions add movement between slides during a presentation. Users can customize the ribbon and quick access toolbar. Slides contain placeholders that hold different types of content.