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 8-8008.
This book really helped me with a greater understanding of the spirit and its relationship to the physical universe. The immortality of the spirit becomes very clear. Also I recognized just how the physical universe is really a product of the spirit. The spirit really is the commander, not the physical universe.