Once you open a table, you can edit the existing data, add new data, or copy data from one cell and paste it into another. You can edit text using the same techniques that you use in other Microsoft Office 2007 applications. When you cut or copy table data, the Office Clipboard keeps track of the last 24 items you cut or copy. If you want Access to undo the last change you made, you can do so by pressing Ctrl+Z or by clicking the Undo button on the Quick Access Toolbar.
Move the mouse pointer over a cell until the pointer turns into a white cross, and then click in the cell.
Double-click a word to select it.