Disclaimer: this is an advanced lesson - but well worth it!  This walk through requires multiple different software and SDK installations which are very resource (RAM and disc space) intensive installs.  This lesson is built using the Windows/Android/Cardboard path - there are MAC options but you will have to refer to the documentation.  This lesson also assumes a basic familiarity with Google Cardboard.  For a lesson in getting started with Cardboard follow the link below.