A presentation involves demonstrating or explaining an idea to an audience to inform, persuade, or build goodwill. An effective presentation includes an introduction, body with main points and periodic summaries, and conclusion. It should be well-planned, prepared, and practiced. Presenters should apply techniques like facts, opinions, views, examples, and questions. The presentation process involves setting the mood, introducing the topic, organizing the content, reinforcing ideas, and summarizing. Stimulating discussion and establishing rapport with the audience are also important.