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 what had stopped Man’s progress to happiness in life. It rang true to me as I read it.
It explains many of the questions I had which just were not explained in all the other books.