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 goes into the details about "How the Mind Works". Make sure you have a dictionary with you when you read this book so you understand the technical words that you run into now and then. L. Ron Hubbard spent many years of his life doing research and methodically applying the data he discovered to prove that this is truly how the mind works. After you read it, see for yourself that it is true.