Self Analysis (August 1951): Possibly the best introduction to the subjects of Dianetics and Scientology. Self Analysis contains both a series of essays on the basic discoveries Ron had made up to this point in his research as well as an extensive auditing section that a person can do by themselves right at home. The book contains a special version of the Hubbard Chart of Human Evaluation and a series of tests one can do to discover where you're really at. Then, by applying the processes from the second half of the book, one is guided through a path of self-discovery. At the end, you will re-do the tests to confirm your improvement. How good can you get? These techniques have been in use for more than six decades and Ron referred to them again and again throughout his research, stating that the processes here were capable of curing any neurosis.
This is the starting point for anyone wanting auditing. You will be audited by L. Ron Hubbard himself through the pages of this book.
Find a copy in used bookstores or at Alibris.com, Amazon.com, eBay. Or you can buy a new copy from these Church of Scientology organizations (but once you give them your address they may continue to send you junk mail) Bridge Publications or New Era Publications.