This document provides an overview of how to use an E6-B flight computer or "whiz wheel" to solve common flight calculations. It begins with conversions between units like gallons to pounds, nautical to statute miles, and Celsius to Fahrenheit. It then covers time, speed, distance and fuel problems. Next, it discusses calculating density altitude and true airspeed given altitude and temperature. Finally, it addresses wind calculations including finding groundspeed and wind correction angle. The overall aim is to teach pilots how to perform essential flight calculations and navigate safely using the E6-B slide rule.