Yet i have no clue how to use it or what to do with it. So please can someone tell me what to do. I am good with arduino stuff but not processing so please help me. Thanks.
The Wii Remote has an infrared camera at one end. The Wii console has a pair of infrared LEDs in a bar that you put in front of your television, so the Wii Remote can see it. The Wii Remote transmits data about what the camera sees across Bluetooth communication to the host (usually the Wii itself).
They're using a PC with Processing instead of a Wii console. They're putting a couple IR LEDs out in front of a Wii Remote. They're listening to the data coming back from the Wii Remote. They're using some math to try to track the position of the Wii Remote. If that Wii Remote is mounted in a helmet, it "tracks" the position of the head.
It is not trying to discover where someone else's head might be, it is just reporting the position of the Wii Remote itself, by triangulating against the IR LEDs.