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Power BI Guides & Tutorials
Master Power BI — DAX, Power Query, data modeling, dashboard design, deployment and the interview questions employers ask.
Power BI articles
Power BI Bookmarks and Buttons for Interactivity
Bookmarks and buttons in Power BI: exactly what a bookmark captures, the Data, Display and Current page options that decide what it restores, four patterns from view toggles to guided stories and navigation, the button actions and states available, and pitfalls that make bookmark-heavy reports hard to maintain.
Conditional Formatting in Power BI: A Practical Guide
A practical guide to Power BI conditional formatting: when to use colour scales, rules or field values, the Percent-versus-Number setting that silently miscolours cells, shown on real margins, colour measures written in DAX, data bars, icons and links, formatting totals, and keeping formatted tables readable for all.
Power Query M Language Basics for Beginners
The basics of the Power Query M language for Power BI and Excel users: how a query is built from let and in, why every step refers to the one before, case sensitivity, lists, records and tables, functions and the each shorthand, how to read the code the editor generates, and the hand edits that are worth making.
Power BI Certification (PL-300): How to Prepare
How to prepare for Microsoft's PL-300 Power BI Data Analyst exam, from the official study guide: the four skill areas and their weights, a study plan weighted to match, newer topics such as Copilot, Direct Lake and visual calculations, the passing score, the free practice assessment and sandbox, and annual renewal.
Star Schema vs Snowflake Schema in Power BI
Star versus snowflake schemas for Power BI models: what a snowflake dimension is, why Microsoft generally favours a single flattened table, a real five-table product dimension flattened into one with every key kept, what flattening quietly drops, and the situations where keeping separate tables makes sense.
Power BI Custom Visuals: When and How to Use Them
Using custom visuals in Power BI: the three places visuals come from, what Microsoft's certification does and does not check, the data, licensing and update risks of third-party code, features a non-certified visual loses, how organisations approve visuals centrally, and a checklist before adding one to a report.