Quick, clean, and to the point

Open help

Windows shortcut 
Mac shortcut 

This shortcut launches the Excel help system. On Windows, use the F1 key to launch Excel's help system. On a Mac, use Command + /.

Note: in Excel 2016 for Mac, you can use F1 to launch help.

Extremely helpful excel examples. Everyday i study it and apply it in my day to day work. - Milind
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