Ключевые слова: assistance, business, coach, competency, concept, conceptual, course, development, educate, education, educational, experience, expert, expertise, hand, improve, improvement, instruct, instruction, instructor, internet, knowledge, leadership, learn, lesson, line, management, marker, metaphor, motivation, personal, practical, practice, professional, school, seminar, skill, study, teacher, teaching, text, trainer, training, wisdom, writing,