LaVeyan Satanism, often referred to simply as Satanism among most adherents is a religion founded in 1966 by Anton LaVey. Its teachings are based on individualism, self-control and "eye for an eye" morality, drawing influences from the rituals and ceremonies of occultist Aleister Crowley and the philosophies of Friedrich Nietzsche and Ayn Rand. Employing Crowley's terminology, its adherents define Satanism as a "Left-Hand Path" religion and philosophy, rejecting traditional "Right-Hand Path" religions such as Christianity and Wicca for their perceived denial of life, and, as in Christianity, emphasis on abstinence and unnecessary guilt. Unlike Theistic Satanism, LaVeyan Satanism does not involve the literal worship of any being other than the self, but rather uses "Satan" as a symbol of carnality and earthly values, of man's inherent nature, and of a cosmos which Satanists perceive to be permeated and motivated by a force that has been given many names by man over the course of time. Anton LaVey established Satanism's first and largest religious organization, the Church of Satan, in 1966, and codified Satanic beliefs and practices in The Satanic Bible in 1969. The Church of Satan acknowledges that there are many Satanists around the world, including both members and non-members. It often rejects the legitimacy of any other organizations of Satanists, dubbing them reverse-Christians, pseudo-Satanists or Devil worshippers.
Read more about LaVeyan Satanism: History, Beliefs, Magic, Satanic Holidays