This document provides an introduction to personal finance. It defines personal finance as the application of financial principles to the monetary decisions that individuals and families make. The document outlines the main principles of personal finance as prioritizing, assessment, and restraint. It also describes the main areas of personal finance as income, spending, saving, investing, and protection. Income refers to sources of cash inflow like salaries, bonuses, and dividends. Spending includes expenses like rent, food, and credit card payments. Saving is excess cash retained for the future, while investing purchases assets to generate returns. Protection guards against unforeseen events through insurance.