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 Problems of Work.
This is the first book I read in Scientology. I was skeptical but curious. It opened up a whale of new viewpoint to me and upon "trying out" some of the things in this book I found it REALLY Worked! With each book I read, I had many realizations as to the fact that this really was true for me.