A PDF download of the Satanic Bible is available at the Satanic Bible Free website as of 2014. It posts the original book written in 1969 by Anton Szandor LaVey.
The book is available despite assertions made on the Church of Satan official website claiming no free copies exist online. It adds that the original publisher of the book, Harper Collins, has not released an e-book version, so any electronic copies being circulated are a violation of copyright.
LaVey wrote the Satanic Bible in a manifesto style, laying out the fundamental groundwork for his philosophy, which encourages indulgence over abstinence and developing the power of an individual.