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 The reason I like it is that it's easy to read and you don't have to take a lot of time to get something out of it. I particularly like the chapter about communication.