Sure, I can help you with that!

Here are the steps to sort the entire spreadsheet by one column:

1. Click on any cell within the data range that you want to sort.
2. Go to the "Data" tab in the ribbon at the top of the screen.
3. Click on the "Sort" button.
4. In the "Sort" dialog box that appears, select the column that you want to sort by from the "Sort by" drop-down list. In your case, select column A.
5. Choose whether you want to sort in ascending or descending order by selecting the appropriate option under "Order".
6. Make sure that the "My data has headers" checkbox is checked if your data has headers (i.e. column labels).
7. Click on the "Options" button.
8. In the "Options" dialog box, make sure that the "Sort left to right" option is selected if you want to sort by row instead of by column.
9. Click "OK" to close the "Options" dialog box.
10. Click "OK" to close the "Sort" dialog box.

Your spreadsheet should now be sorted by column A, with each row that stretches across columns A-H sorted accordingly.