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 giving me some basic understanding about what makes people react the way they do - esspecially when there seems to be no reason to react like that.
It also gave me an understanding about myself and what it is that is stopping somebody in the things he really wants to be doing. And the best; it gives the solution to remedy this!