When was The Secrets of Scientology created?
The Secrets of Scientology was created on 2010-09-28.
"Is Scientology based on atheism?" No, Scientology is a fraudulent religion created by a mediocre author on a dare. L. Ron Hubbard's religion has elements of the supernatural in it. Atheists do not believe in Scientology. Scientology is in general an insane mockery of all religions and scientific concepts.