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 to understand the truth about what the mind really is, and how you can use it to survive and be successful and happy, instead of feeling useless and bored and miserable.