Management involves planning, organizing, leading, and controlling resources to achieve organizational goals. The main functions of management are planning, organizing, staffing, directing, and controlling. Managers fulfill three roles - interpersonal, informational, and decisional. Management occurs at three levels - top managers set goals and strategy, middle managers oversee first line managers who supervise employees. Good conceptual, interpersonal, and technical skills allow managers to be effective. Studying management provides knowledge on how organizations work and increases leadership, career, and life skills.