Tools
Solve one concrete spreadsheet task in about ten seconds, then jump into practice.
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CAGR calculator
Interactive CAGR inputs, copyable Excel formula, linked practice.
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Freeze panes
10-second interactive demo for top row, first column, and panes.
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Merge cells
See which value survives a merge — interactive demo plus both menu paths.
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Highlight duplicates
Light up repeated values — Excel & Sheets menu paths plus the COUNTIF formula.
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Drop-down list
Data Validation → List: typed source or range, edit and clear — interactive Mini grid.
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Line break in cell
Alt+Enter hard breaks vs Wrap Text soft wrap — side-by-side Mini grid demo.
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Checkbox
Insert clickable TRUE/FALSE checkboxes, count with COUNTIF — Mini grid todo demo.