This document provides an introduction to spreadsheets, including what they are, who uses them, and what they can do. It explains that spreadsheets allow users to organize and calculate data using rows and columns. Spreadsheets are commonly used by schools, sports teams, businesses, families, and government agencies. They can be used to answer "what is" and "what if" questions. The benefits of spreadsheets are that they are fast and accurate at performing calculations. The document then provides more details on the core components of spreadsheets, including cells, cell references, data types (labels, values, formulas, and functions), and examples of each.