full screen

docs/windows_use_vm.md

@@ -28,4 +28,6 @@ To do that you can navigate to the Device menu and mound a virtual drive contain
 After doing the installation reastart your virtual machine and native screen resolution should be available in the monitor settings tab.  
 To go full screen you have to press the host key + f (by default host key is right CTRL).  
 
+see also <a href="https://askubuntu.com/questions/22743/how-do-i-install-guest-additions-in-a-virtualbox-vm">Link-1</a>, <a href="https://www.virtualbox.org/manual/ch04.html">Link-2</a>,  <a href="https://docs.oracle.com/cd/E36500_01/E36502/html/qs-guest-additions.html">Link-3</a>
+
 Have fun!!!!