The document provides advice about structuring and organizing a presentation. It recommends that the introduction, main body, and conclusion are the most important parts. The introduction creates a first impression that conditions how the audience views the talk. A good introduction will engage the audience with the speaker and ideas, while a poor start can make things worse. The conclusion is the last chance to summarize ideas and leave the audience with a final impression. Presenters should prepare the introduction and conclusion especially well and not improvise them, as learning them conveys control over the material.