Ключевые слова: artwork, background, black, blackboard, board, business, businessman, career, classroom, coaching, conceptual, corporate, definition, development, education, elearning, electronic, ideas, instruction, internet, knowledge, learn, lesson, man, manager, maturity, online, personal, program, retirement, school, skill, students, study, success, successful, suit, teaching, technology, text, training, tuition, tutoring, university, web, word, workshop, young, youth,