Ключевые слова: adult, app, background, base, book, business, businessman, communication, computer, concept, course, courses, digital, diploma, distance, e, ebook, education, elearning, electronic, icon, interface, internet, knowledge, laptop, learn, lesson, library, media, network, online, page, people, reading, school, screen, seminars, student, study, studying, technology, training, tutorial, university, video, virtual, web, webinar, workshop,