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 changing my viewpoint on life, giving me a fresh look at it. This book is a collection of articles by L. Ron Hubbard that cover pretty much every aspect of existence. Read it, it's quite an eye-opener.