This document discusses data visualization and provides information on why it is useful, the process of creating visualizations, and examples of data visualization software. It defines data visualization as using visual representations to explore, understand, and communicate data and information. The key benefits highlighted are that human brains are very good at detecting patterns in visual formats. It also outlines the pillars of successful visualizations as having a clear purpose, including relevant content, using an appropriate structure, and having useful formatting. Finally, it briefly introduces some common data visualization software tools like Tableau, IBM Cognos, and Domo.