Todd Robbins' video "Magic of the Sideshow" is, I'm sure, still available through Stevens Magic Emporium, as are copies of "Swami/Mantra" which detail many of the geek sideshow/spooky-creepy aspects of magic.
However, as Todd himself would tell you, many of these stunts are dangerous
and you'd be best off learning as an apprentice to a working pro.
Todd has run at least two editions of "Sideshows by the Seashore" at Coney Island (see website here
) where you can learn all the tricks of the trade from the real pros.
This is nothing to joke around about -- my good friend Charon Henning apprenticed to one of the legends of the sideshow business and yet still spent several nights in the ICU of Johns Hopkins because of a mishap.
Don't play around with this -- if you're going to learn it, learn it right; talk to Todd or take the Sideshow School course.