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.
This book really helped me with a truthful understanding of the human mind, how it works and why at times it doesn't seem to. If you are interested in why and what you are, there is no truer data than this.