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 improving my ability to communicate and increase understanding with others.
This book is a collection of 30 short essays written by L Ron Hubbard on many different subjects, such as How to Live with Children, On Marriage, Man's Search for His Soul, What is Knowledge?, Two Rules for Happy Living, and more.