This lecture provides a foundational understanding of the Microsoft Windows operating system as part of the ICDL training program. It covers the evolution of Windows versions, system requirements, installation options (upgrade vs. clean install), running and uninstalling programs, managing files and folders, and using key system tools like the Control Panel. The session also demonstrates hardware management (e.g., hard disk formatting, mouse settings) and regional configurations. Ideal for beginners and students in introductory computer science or digital skills courses