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 different parts of the mind, other people and myself much better. Best of all, understanding that we can do something to change what we don't like and be happier.