The "Power Query Cookbook" is your comprehensive guide to mastering data preparation and transformation using Power Query. With this book, you'll learn to connect to data sources, reshape data to fit business requirements, and use both no-code transformations and custom M code solutions to unlock the full potential of your data. Step-by-step examples will guide you through optimizing dataflows in Power BI. What this Book will help me do Master connecting to various data sources and performing intuitive transformations using Power Query. Learn to reshape and enrich data to meet complex business requirements efficiently. Explore advanced capabilities of Power Query, including M code and online dataflows. Develop custom data transformations with a blend of GUI-based and M code techniques. Optimize the performance of Power BI Dataflows using best practices and diagnostics tools. Author(s) None Janicijevic is a seasoned expert in data analytics, specializing in Microsoft Power BI and Power Query. With years of experience in data engineering and a passion for teaching, None brings a clear, actionable, and results-driven approach to demystifying complex technical concepts. Their work empowers professionals with the tools they need to excel in data-driven decision-making. Who is it for? This book is designed for data analysts, business intelligence developers, and data engineers aiming to enhance their skills in data preparation using Power Query. If you have a basic understanding of Power BI and want to delve into integrating and optimizing data from multiple sources, this book is for you. It's ideal for professionals seeking practical insights and techniques to improve data transformations. Novices with some exposure to BI tools will also find the material accessible and rewarding.