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.
This book really helped me with handling my ill parents, my father has Parkinson's Disease, and my mother is diabetic and has heart problems. I live with them and take care of them. It is very stressful at times. The book gave me a clear understanding of the situation and tools to better the condition.