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: The Fundamentals of Thought.
This book really helped me. I will never forget looking at that book cover for the first time and realizing, "Wow, somebody actually wrote something about the fundamentals - the fundamentals of thought."
I think if somebody is interested in knowing more about themselves and becoming more able and being who they are spiritually, then they should start where I started and read Scientology: The Fundamentals of Thought.