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.
Reading Dianetics: The Modern Science of Mental Health provided me with the first discussion of the human mind that actually both made sense and had practical applicability. Here was something that could be understood, could be used, and could be easily tested. Reading this book was my first step in realizing who and what I really am.