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 Self Analysis.
This book really helped me with understanding others and myself. This gave me ideas I could put to immediate use and get the benefit from. It is one of my favorites that I have reread it many, many times over the years and always get something out.