Search for :

Excel Select All

In Word there is an option under Edit to Select all data in a document, this option is not available under edit in Excel

Solution
Use the shortcut keys "Ctrl" and "a"

Hold down the "Ctrl" key and tap "a"

Extra note
If you press "a" again while continuing to hold down the "Ctrl" key all cells in the sheet are selected not just all those up to the last filled Cell
    IP