However, you simple need a CD, black paper, a dark space, a torch and a tripod for your camera.
A long exposure is needed - hence the tripod (or you will get camera shake)
Use manual setting so you can expose for 10 or 15 seconds, F22 (or as high as your camera will go) and ISO 100.
There are tutorials on YouTube if you find it easier to follow a video tutorial - this is just one example
Following 10 minutes of playing these were a few results
I did read in one of the tutorials that if you put your CD in the microwave it will give it a crackled texture - well the texture is good but I'm not sure I would recommend it! (Kitchen still smells of burning and I only put it in for 2 secs - don't tell Tony!)