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: The Fundamentals of Thought.
When I first read this book I had been on a search to find the answers to life's key questions. To this point I had only found very esoteric philosophies which had little to do with having a better life. This book was succinct and immediately applicable to my life.