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.
This book really helped me with I have learned a great deal from this book already, and every time I read it I find and learn something different. What I really learned from this book is that understanding life a little better promotes change for the better which brings increased happiness into your life.