In July 2007 David Miscavige, the leader of Scientology, re-released the full set of books written by Scientology founder L. Ron Hubbard in the 1950s with accompanying lectures giving more details as the books. The full set contains all the "basics" of the Scientology belief system (called Scientology technology by Scientologists) and present the core of Dianetics and Scientology. Certainly it is very important for Scientologists - and anyone who wants to find out about Scientology - to read those books, in chronological sequence as the system developed over several years.
I read some of those, and let me tell me you what I thought Scientology is no longer holds true. This is the real stuff. Like the book "Dianetics". You grab the book, read it and start auditing with someone. Just like that! I found a partner now to work with and keep you posted how it went.