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 helped me understand the church of Scientology better. It is filled with helpful ways to help yourself and others. This book gives you an overview of the church and what it is and how it can help change your life. It will answer many question you may have about the church and how it works. It is well worth the reading.. you'll have a lot of tools to help yourself and others from the Scientology hand book.