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 Scientology: The Fundamentals of Thought.
This book really helped me with getting a solid philosophical foundation from which to think with. I now understood the basics behind relationships, what the body, soul and mind were, how life operates, how to control things, and more. It really helped with the fundamental of thought so I could make more rational decisions concerning my life and how I could foresee the future better.