This document provides an introduction to risk management concepts. It defines risk as a compound measure of probability and magnitude of adverse effects. It notes that risk involves uncertainty about future events and potential for loss. The document discusses different types of risks like known risks, predictable risks, and unpredictable risks. It also distinguishes between fundamental or macro risks that affect large numbers of people versus particular or micro risks that individuals can partially control. Finally, it covers topics like pure risks versus speculative risks, diversifiable versus non-diversifiable risks, and risk measures used in portfolio theory.