The default home page in Safari browser can be changed using the Safari Preferences option. To change the home page, click the General Settings option available on the top right hand side of the browser and select Preferences from the list of available menus
This would display the following General Preferences windows as shown below.
Navigate to Home page and type the address of the website which you make as the home page. If you want to make the current web page as a Home page then click Set to Current Page button.