24 Feb XLII A.S.
The first source you should consult -- before any other book, website, whatever -- is The Satanic Bible by Church of Satan
founder, Anton Szandor LaVey. You can pick it up through the CoS Emporium
by clicking here
. It is also available through all major booksellers.
Other books from the Church of Satan
are also available, and they are each recommended.