This document provides an introduction to scenario planning as a foresight methodology to help make better decisions. Scenario planning involves listing driving forces, ranking their importance, creating a scenario grid with different outcomes, and imagining possible future worlds. It is used to identify risks and opportunities and stimulate innovation. The goal is not to predict the future but provide structure to think about possible long-term implications. The document outlines the steps to scenario planning and provides an example scenario grid around issues of personal data and privacy in the year 2020. It concludes by encouraging the reader to try scenario planning.