Create Dynamic Excel Data Validation Lists Using Table Spill Ranges

Excel validation lists avoid blanks and errors with TOCOL(ignore) plus FILTER; the spill range stays stable across worksheets.

Build an Excel Dashboard That Pulls CSV Data Without Opening Files

Learn how Excel IMPORTCSV refreshes linked CSV data, handles locale formats, and switches to IMPORTTEXT for semicolon delimiters.
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Four ways to specify dates using Excel data validation

Excel's data validation feature is more versatile than you might think. Learn how to use literal values, input values, list values, and even formulas to restrict input date values using data ...