Ключевые слова: 3d rendering, assistance, background, black, blue, break, business, coach, coaching, concept, corner, course, curl, development, doodle, drawn, edge, education, elearning, grunge, hand, hole, icons, information, knowledge, leaf, learn, learning, note, online, opening, page, paper, ripped, seminar, sheet, sketch, study, studying, teach, teaching, text, think, torn, trainer, training, webinar, word,