Click on Microsoft Excel . When you create a new workbook, the Microsoft Excel window displays a worksheet with a grid of rows and columns. Each box, or cell, has a reference indicating its row and column location, for example, C3. The Standard and Formatting toolbars, which are located at the top of the screen, have buttons that provide easy access to common tasks. The selection can be a single cell or a range of cells.
Additional clicks undo previous actions.
Or you can click the Undo arrow to select a particular action from a list of recent actions. To undo an undo, click the Redo button. The Fill Handle is the square at the lower right hand corner of a selected cell. Fill Range of Cells with a Series Avoid repetitive typing and save time by entering some kinds of data automatically. You can automatically enter the same information in several cells, or enter an incremental series.