The document provides tips and guidelines for effectively using visual aids such as overhead projectors, flip charts, posters, videos, audiotapes, books, handouts, and microphones when giving presentations or speeches. It discusses preparing, using, and handling the various visual aids before and during presentations. It also provides general guidelines for using supporting materials like examples, statistics, testimony, and comparisons to strengthen speeches. Finally, it suggests visualizing an improved speech to help with preparation and building confidence.