This tutorial is for an outdated version of Google Chrome. Please refer to the updated version (12/30/11)
The third item in the Home Page section of Google's Basic Options is a check box labeled Show Home button on the toolbar. Disabled by default, this setting will display a Home Page button on Chrome's toolbar. The button is placed directly to the left of the browser's address bar.
To add this button to your toolbar, simply check the box and click on the Close button.