I am the owner of a website on Theistic Satanism which contains information about many different kinds of theistic Satanism, not just my own. (The website has been in existence since 2002. See especially (1) The varieties of theistic Satanism, (2) The definition of "Satanism" according to new-religion scholars and other observers and (3) Other theistic or theistic-friendly Satanism/"LHP" websites.)
Locally here in New York City, I run the group NYC Satanists, Luciferians, Dark Pagans, and LHP Occultists, which meets in person approximately monthly, and I'm in process of launching the Church of Azazel.
I've been a Satanist since 1991.
Back in 2006 I participated here, on Wikipedia, in an effort to get the articles on Satanism to become a more objective overview of the many different kinds of Satanism.