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 Self Analysis.
This book is broken up so you can read chapters by looking at the content and pick the subject most applicable to you. When I read these different chapters and applied them to life and the people around me I saw a difference. This book is simple and easy and works.