This guide offers a foundational introduction to the strategic and operational use of information technology in business. It is a series of presentations covering essential topics such as the digital economy, enterprise resource planning (ERP), customer relationship management (CRM), supply chain management, knowledge management, decision support systems, IT investment economics, and information security. By exploring practical examples and best practices, this resource equips readers with the knowledge needed to effectively integrate IT into their business strategies, enhance operational efficiency, and ensure robust security.