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 Science of Survival.
My absolute favorite book in Scientology is Science of Survival. In this book LRH teaches you how to predict human behavior. He helps you sort out behavior that you always wondered about in the back of your mind, and place it on a comparative scale. Based on things that you know about people, you can predict how they'll behave in other areas, and you can use this to understand, and feel more in control in life.