Excel  / 2003 / 2007 / 2010 / 2013 / 2016

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  Creating and using named ranges

  Range names is a powerful Excel feature which allows you to give a symbolic name for the cell or range of cells to be later used as convenient replacement for cell/range address in formulas.
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  Adding a header and footer to the worksheet

  Headers and footers are widely used in the Microsoft Word document, but you should know that Excel has headers and footers too.
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  Adding a background image to the spreadsheet

  You can make your Excel spreadsheets more appealing by choosing graphics file to serve as a background for a spreadsheet similar to the wallpaper that you may display on your Windows desktop.
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  Starting Excel without an Empty Workbook

  If you prefer to avoid the empty workbook to be created when Excel starts up, you can do so by editing the command line that is used to start Excel.
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  How to change the number of sheets for new workbooks

  Excel 2016 automatically creates one worksheet in each new workbook, but you can force it to create as many worksheets as you need.
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  Combining text and formatted values

  The Excel TEXT function enables you to specify numbers and date format.
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  Making a spreadsheet very hidden

  Using the Hide command you can hide the data and formulas from "inquisitive minds". But some of them still can use Unhide command. Nevertheless you can completely hide Excel spreadsheet so that it will be needed some VBA programming to unhide it.
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  Allow specific users to edit ranges in a protected spreadsheet

  Excel offers you an ability to assign user-level permissions to different areas on a protected spreadsheet. You can specify which users can edit a particular range while the spreadsheet is protected. As an option, you can require a password to make changes.
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  Share workbook and track changes

  With Excel built-in tools you can easily work together on workbooks and monitor who, when and what changes made. E.g., track project status and tasks.
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  Protecting workbook elements

  Much like as you can protect elements of each Excel spreadsheet (see Protecting spreadsheet elements for more details), you can protect structure of the sheets in the workbook, prohibiting renaming, moving and other operations.