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 The Scientology Handbook.
This book really helped me with basic application of Scientology technology which handles life situations, for example, marital problems, upsets with children, body ailments, goal setting and much more. It's just a matter of reading it, understanding it, doing it correctly and it works every time.