Exploring Public Speaking: 4th EditionExploring Public Speaking is a usable, zero-cost textbook for basic public speaking courses or courses that include basic public speaking skills as one of their primary learning outcomes. The free, open nature of the text means that instructors are able to use all or part of it, and add their own materials. Standout features include coverage of PowerPoint, audience analysis and responsiveness, ethics in public speaking, persuasion, special occasion speeches, and structure of speeches.