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 Introduction to Scientology Ethics.
This book really helped me with understanding why I was unhappy and how to change. But you should read anything of L. Ron Hubbard's works that you can put your hands on. You will find it sounds all very simple and it is! But you use it and you will see that it works and is dynamic.