Ключевые слова: abstract, arrow, background, basics, business, choice, choose, commerce, concept, concepts, conceptual, content, core, creative, digital, ecommerce, electronic, grunge, idea, illustration, information, intelligent, learn, learning, list, modern, online, pattern, phases, pointer, presentation, principles, process, retro, select, selection, smart, step, steps, stylized, technologies, technology, terminology, textured, trendy,