Under Table Tools on the Layout tab click the Rows Columns Dialog Box. When you click on the Tables button on the Insert tab youre given several options. If a table cell contains multiple lines of text Word numbers each line in the cell.
On the Table Properties dialog box click the Cell tab if its not already active.
Select Apply to Cell or Table. Click the Insert tab in the Ribbon. To number the beginning of each row select only the first column in the table by clicking the columns top border. For a basic table click Insert Table and move the cursor over the grid until you highlight the number of columns and rows you want.