This book offers a wealth of information for improving your presentation skills. The book builds upon the foundation of purpose, audience, and topic when developing an effective presentation. The main challenges to overcome when presenting are: keeping your sense of humor, dealing with late arrivers, handling early departures, audience interruptions, inattentive and argumentative audience members, saboteuring attendees, and audience members who steal the show from your presentation. Listen to yourself speak, such as by recording yourself, and you’ll get a wealth of useful feedback to help you improve.
Source: Presentations: Proven Techniques For Creating Presentations That Get Results. By Gary McClain, 2007, Adams Media, Avon, MA, ISBN: 978-1598691535.