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 really helped me with a greater understanding of life and how to get along with others. It gives one an optimistic attitude about life. If you have a "Life's a bitch and then you die" kind of attitude, you definitely need this book.