This document provides an introduction to insurance concepts. It defines insurance as pooling resources from many to pay for losses of the few. The document then discusses the origins of insurance in ancient China and Greece. It outlines several key principles of insurance: utmost good faith between parties, insurable interest which provides financial benefit, indemnity which aims to restore the insured to their prior financial position, proximate cause which determines the direct cause of a loss, and subrogation which allows the insurer to recover costs from responsible third parties. The document concludes by discussing the practice and importance of insurance as part of risk management.