The default setting for Internet Explorer includes the following bars at the top of the browser: the menu bar, the standard toolbar, the Address bar, and the Links bar. All these take up precious screen real estate.
To free up some space, put your pointer over the bottom of the lowest bar, and when it turns into a double arrow, drag the bar up as high as you can, until you can't drag anymore. Now all the bars appear as one narrow bar. (Yes, the buttons have lost their labels, but do you really need a label on the Home button?) To rearrange the order in which these bars appear within the consolidated strip, put your mouse pointer over the vertical line at the left of any bar you want to move, then drag the bar to the left or the right. Continue dragging bars in either direction until you see a configuration that makes sense to you.
To further optimise the newly consolidated toolbar, consider turning off the Links bar, which contains buttons that take you to various Microsoft sites and services. To do so, right-click anywhere on an unpopulated area within the bar, then deselect the Links option in the menu to turn it off.
To get rid of the title bar and give yourself even more space, press