Using Print Preview to change margins..

Click the Print Preview Button

Note: if you cannot see this button, click the more button on the standard toolbar to show all buttons

Click the View Ruler Button if the rulers are not displayed

Position the mouse over the gray/white part of the ruler at the side or top..the cursor will change then drag the margin to make it smaller or bigger.

Note: To view the exact measurement of a margin, press and hold down the Alt key as you drag the margin

Click Close to close the Print Preview window