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 my day to day life. A New Slant on Life is an incredible short but comprehensive collection of valuable data you can use in every day life in any situation: May you be a business man, a mother, a housewife, a teacher, a fireman or whatever, this book is so basic, yet so powerful, that you can remedy almost any situation immediately by just applying the data.