Open up multiple websites automation| Batch Script

First open your notepad. Then write the following code-
start chrome.exe www.facebook.com
start chrome.exe www.youtube.com

And save the file as openwebsite.bat on your desktop
Close the file .Now double click or open your openwebsite.bat from desktop and it should work.
I am using chrome so chrome.exe but if you want it for firefox then write –
start firefox.exe www.facebook.com
start firefox.exe www.youtube.com

Use any other websites you like…