"The Great Courses Influence Mastering Life's Most Powerful Skill DVD & Guidebook" is a lecture series featuring Professor Kenneth G. Brown as the instructor. The course covers the topic of influence, focusing on mastering this powerful skill in order to have a positive impact on others. The DVD and guidebook provide a comprehensive educational experience in English, making it accessible to a wide audience interested in improving their influence and communication skills. The course is designed to help individuals better understand and utilize the art of influence in their personal and professional lives.