This document provides an overview of key concepts related to cash flows and valuation. It discusses the accountant's approach to the statement of cash flows, which explains changes in cash balance rather than measuring firm value. The financial analyst's approach is more concerned with cash flows to equity and the firm. Present and future value concepts are introduced, along with discount rates and how they relate to risk. Annuities, including growing annuities, are defined and the formulas for present and future value are provided. Applications to valuing bonds and saving for college are discussed. The document aims to explain fundamental valuation concepts.