This document provides an introduction to Power Query, including its purpose and advantages. Power Query is an Excel add-in that allows users to extract data from various sources, transform it, and load it into a worksheet. It provides tools for cleaning, transforming, and reshaping data in one place. Using Power Query can save hours of manual work when copying, pasting, and redoing transformations. It also allows data to be refreshed with one click to update it quickly. The document reviews how to install Power Query, get to know the editor interface, load data, and provides some useful links for learning more.