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: A New Slant on Life.
This book made a lot of sense in helping me to understand myself, and the people around me. It taught me in a very simple and straightforward manner how to be happier and trust my own judgment. The formula of good communication the ARC (Affinity, Reality, Communication) Triangle especially taught me how to get along with other people better and be happy.