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 the depressions I used to have, repeatedly. I used to read many books before. I have always been looking for answers, and here I got them. When I read the book, my depressions disappeared.