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Digital Productivity & Tools
TL-03L2
VDigital Productivity & Toolschecked 91 days ago14 min read

Cleaning Messy Data Into Something Usable

You'll walk away with

One real messy dataset cleaned into a tidy table you can actually analyse

Before thisTL-01 Spreadsheets From Zero: Formula Logic and Your First 15 Functions
If it looks different

⚠️ Version note. Menu locations differ across Excel, Google Sheets and versions. The cleaning steps are universal. Last checked: 25 July 2026.

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  1. 01"Garbage in, garbage out" is a spreadsheet law
  2. 02Make a copy and look before you touch
  3. 03Trim invisible spaces
  4. 04Remove duplicate rows
  5. 05Split combined fields and fix types
  6. 06Handle blanks and inconsistent categories
  7. 07Verify the clean table
  8. 08Common mistakes
  9. 30′Exercise, with a verifiable output
  10. ▶The video and audio versions
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One real messy dataset cleaned into a tidy table you can actually analyse

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