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 gave me an understanding of the human mind. This allowed me to be more self confident in dealing with my own shortcomings. It helped me to see why others behaved irrationally. And when they did behave irrationally, I didn't have to react. I could just do the best thing for the situation. Also the book shows you how Mr. Hubbard used the scientific method to discover the actual mechanics of the mind.