When you see a heavy border around the cell, the cell is active and ready to take in the data.

To enter data into cells, just type in your data. Soon as you enter the text, a number, a formula or function, you will see the results in the Formula Bar.

If you want to give your worksheet a title, just click in a cell and type your title. For column headings, click in the appropriate cell and type in your heading. The same applies to rows. Look at the graphic below to see how headings and titles may look like in a spreadsheet.

To edit data within a cell, one can use one of two methods. First, a user could click within the cell and edit data that way. Second, a user could click within the formula bar to edit data. Either way, the data selected will be changed depending upon what you do.