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 Introduction to Scientology Ethics.
This book really helped me with understanding the basic principle of ethics as well as the cause of ups and downs in life; the difference between the social and the anti-social personality; the handling of ups and downs in life and anti-social personalities. This book has such great data it is a must read.