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 understanding myself, why there are things I like more than the others, why there are things that make me feel sad with no obvious reason or backing off some areas in life. The book helped me to understand other's behavior and most of all enable me to really help others in terms of really changing their life for the better.