Importing CSV from Google Drive to Google Sheets - Excelify.io - Medium
Info importdata function and making downloadable links from public google drive files.
Tips for using Google Sheets for event programme planning – MASHe
How to Highlight Duplicates on Google Sheets (in 5 simple steps)
Use conditional formatting, highlight a column, use a custom formula:
=countifs([range],[first cell in range])1
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