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 Evolution of a Science.
This book helped me to understand my own mind. Because the book was very specific regarding L. Ron Hubbard's research into the mind, I was able to totally understand how the mind worked, why people act crazy sometimes, and how happiness is actually possible.