To enter data into a worksheet, a cell must first be
selected. A selected cell is outlined in black (or
possible other colors). For example below, the sample sheet is ready for data entry :
Try entering your name in cell A1. Remember, for
information to be entered, you must follow the data
with enter (), or an arrow key, or by clicking the
mouse in another cell. Try editing your name. Select
cell A1 and click the mouse twice. Use [Delete] or [Backspace]
to delete items.
Numbers are entered in the same manner. A number will
become a label (a non integer entry) if used in
combination with letters. Try entering a number into
cell B1.