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 discovering the cause of my lack of self confidence, sometimes irrational behavior, and to find out what the cause was of many broken-up relationships.
I began to use the knowledge and the method described in this book and from that point on my life changed for the better.