The document discusses various aspects of marketing communications and public relations. It defines marketing communication as influencing target markets so consumers feel enthusiastic about a company's products. The main functions of marketing are identified as promotion, selling, product management, pricing, financing and distribution. Various types of marketing communications are discussed, including advertising, sales promotion, public relations and social media marketing. The differences between online and offline marketing are outlined related to scope, audience targeting, cost, measurability, interactivity and tangibility. Barriers to effective marketing communications are also mentioned such as lack of understanding the target audience.