Power Query for Beginners

In Power Query for Beginners, Greg Trzeciak teaches you how to clean, shape, and prepare data the right way before it ever reaches your reports. Power Query is where most Power BI success is won or lost, and this course gives you a beginner-friendly, step-by-step path through the editor so you can confidently load messy data and turn it into something reliable. You’ll learn what Power Query is, how it fits into Power BI (and Excel), and the core transformation habits that make datasets easier to model and report on. You’ll work through practical transformations like setting data types, renaming and removing columns, cleaning and splitting values, sorting, and combining multiple sources. Greg also covers quality tools like data profiling, spotting issues early, understanding query dependencies, and organizing queries so projects stay maintainable. By the end, you’ll have a repeatable workflow for loading, transforming, and validating data so your reports start with clean, trustworthy inputs.