This document provides an introduction to finance including definitions and categories. Finance is defined generally as the management of money funds from various sources to launch projects or run businesses. It also involves the study of financial systems, instruments, assets and liabilities. The document outlines three main categories of finance: public finance, corporate finance, and personal finance. Public finance involves the management of government funds from taxes, customs, sovereign debt etc. Corporate finance includes sources of funds for businesses from equity, loans, retained earnings and financial/trade debts. Personal finance covers an individual's management of income from salaries, rents, interests as well as financial and other debts.