This document provides an overview of using spreadsheets and introduces key concepts. It defines a spreadsheet as a program that displays data in tables called worksheets. Worksheets contain cells organized into columns and rows, which can contain labels, values or formulas. The document outlines common spreadsheet functions and how to create formulas by combining numbers, cell references, operators and functions. It also discusses tools for formatting worksheets, such as adjusting column width and row height, filling cells, summing ranges, and creating charts.