Here are a few older interviews I found online that I'd given which touch upon Satanism and the Church of Satan briefly:

Interview #1

Interview #2

Interview #3

Over the years and through two hard-drive crashes that wiped out everything, I seem to have lost most of them.

Here are two essays from my book, The Bloodfire Compendium:

Satanism: a Brief Summary

What the Hell is "Satan"?!

*Essays will be updated for the 2nd edition.