If you have several parts of something one, you can demonstrate each item in one pie chart. But sometimes you want to demonstrate the changes of those parts and doughnut chart will help you to do this.

Excel propose easy and very fast way to create a chart by using shortcut keys.

Saving your document in the same location with the same name is easy.

The Open dialog box, is your key to finding and retrieving Excel workbooks.

Often you'll want to insert a series of dates into a worksheet. The most efficient way to enter a series of dates doesn't require any formulas - just use Excel's AutoFill feature.

Solver tool allows you to specify multiple adjustable cells and constraints on the values that the adjustable cells can have, generate a solution that maximizes or minimizes a particular worksheet cell, generate multiple solutions to a problem.

When calculating the difference between two dates, you may want to exclude weekends and holidays.

The easiest way to create a macro in Excel is to use Office's built-in Macro Recorder tool.

Sometimes it is handy to view (and print) the formulas in all the cells in a spreadsheet with out having to manually enter each cell.

Because time stamps are represented as serial numbers, you can subtract the earlier time from the later time to get the difference.