The document discusses different types of speeches based on purpose and delivery. There are three main types of speeches according to purpose: informative speeches which aim to help the audience understand information, persuasive speeches which aim to convince the audience of a point of view, and entertainment speeches which aim to amuse the audience while delivering a message. Speeches also differ according to delivery, whether it is from a manuscript, memorized, impromptu, or extemporaneous. Principles of speechwriting include choosing a topic, analyzing the audience, sourcing information, outlining, and beginning and ending the speech effectively. Tips for delivery include modulating the voice, using facial expressions, posture, and gestures appropriately.