To move around a VR scene while using a computer, use standard w a s d keys. On mobile devices, looking through the screen will allow you to "look around"(as if you are viewing the scene through a magic window) so that pivoting in real space will allow you to look in different directions. A touch should move you forward in the direction you are looking. "One touch" will also work with phone-based headsets that have an interaction button. For handheld mobile devices, two fingers on the screen simultaneously will move you backwards.