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 Scientology: A New Slant on Life.
The very basics for achieving lasting happiness and winning at the game of life are contained in this book, along with some answers to a few of life's basic mysteries. The chapter on how to study a science and how to evaluate data is delicious almost to the point of being fattening.