If you want to find out more about Dianetics and Scientology, the best way to do this is to read an L. Ron Hubbard book on the subject. I personally recommend you read Dianetics: The Modern Science of Mental Health.
Dianetics: The Modern Science of Mental Health is my favorite book, it changed my life by answering all the questions I had about the mind and how it worked. It is the basic handbook of the mind, and the more you read the more you understand and learn.