Spreadsheets

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About this category

Spreadsheets are the most-used tool in any office — and also the most underused. Most people stick to manual entry and simple sums, while the formulas and features that save hours sit untouched. That’s what this category fixes.

You’ll find step-by-step guides for the formulas that matter (SUMIF, XLOOKUP, INDEX-MATCH), fast fixes for the errors that waste your afternoon (VLOOKUP returning #N/A, SUMIF returning 0), and honest comparisons when you need to pick a tool — Excel vs Google Sheets, or when to graduate to Airtable.

Who it’s for: anyone who works with data daily but never had a formal spreadsheet course. If you’ve ever Googled a formula at 5pm on a Friday, this category is for you.

Start here:

Every guide is tested on actual spreadsheets before publishing — no copied documentation, no theory that falls apart in practice. New guides land here every week.