Make sure your PC is compatible with the HTC Vive. You can find a list of recommended specs here. Download the install package from vive.com/setup and go through the installation wizard. The install package will automatically detect and configure all the equipment.
You can use a VR video player compatible with HTC Vive of your choice. We recommend the following:
Autoplay VR - Autoplay VR is a smart VR video player all on autopilot. Sit back, relax and enjoy the flight!
Whirligig - reliable VR video player compatible with Oculus Rift, HTC Vive and OSRV.
Download a RealJam VR video to your computer.
Please, refer to the documentation of VR video player, installed in the second step.