On Opera's main menu, click on the "Navigation" and select "Set Home"; or you can use press "Alt+P" in your keyboard to bring up the "Preferences" dialog window
In the "Global Home Page" field, type the URL
Click "OK"
Upon exiting Opera, select the "Save Windows" checkbox
Upton launching Opera, click on "Home" in the toolbar
On Opera's main menu, click on the "Tools" and select "Preference"; or you can use press "Alt+P" in your keyboard to bring up the "Preferences" dialog window
Click the drop-down list box "Startup", select "Start with home page"
Under the tab "General", type the current page's URL in the textbox "Home Page"; Or click the button "Use Current"