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 the basics of human behavior and especially what to do about unwanted conditions. The book explains the different types of minds and one can see how it led to the spirit of Man and Scientology. The fundamentals of an individual's own hopes and difficulties and how to resolve them are there in all their raw and exciting form.