On the Toolbar, click File and select Preferences from the drop-down menu.
Setting the Home Page
The Preferences window opens.
Here is where you'll configure Opera to browse the Internet, tell it what e-mail client you would like to use, clear the cache, cookies, and history, set the home page, etc. The left-hand column contains a variety of categories and their respective submenus. Highlight the categories and submenus to see the options that pertain to them.
Highlight Start and exit.
To the right you can set your home page. The home page is the first page displayed when you launch Opera.