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Practical writing on the same subjects as our courses: Excel technique, Power Query, Power BI, dashboard design, metric definitions and using AI assistants for analytical work without getting burned.

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Excel Tips 7 min read

XLOOKUP vs VLOOKUP: what actually changes in your work

VLOOKUP has three structural weaknesses that cause most lookup errors. XLOOKUP removes all three — here is exactly how, and what to do when your Excel version does not have it.

Excel Tips 7 min read

How to structure a workbook someone else can inherit

The real test of a spreadsheet is not whether it works today, but whether a colleague can open it in eight months and change it without breaking it.

These articles are free and always will be. They cover the ideas; the courses cover the practice, with realistic data, exercise files and the full sequence. If an article answers your question and you never buy anything, that is a perfectly good outcome.

Go from reading to doing

Nine structured courses with exercise files, from Excel fundamentals to published Power BI reports.