Ключевые слова: background, blog, blogger, book, camera, casual, caucasian, channel, class, course, display, education, explain, filming, focus, gesture, guy, interview, lecture, literature, male, man, middle, modern, novel, online, people, person, presentation, production, professional, read, record, reportage, shooting, speaker, speaking, stream, talk, talking, teach, teacher, teaching, technology, trainer, training, video, vlog, vlogging,