I have a few books, purchased legally, from "The Anarchist Cookbook" to the US Army's "Improvised Munitions Handbook." They were all obtained long before the recipes therein were put on the World Wide Web.

Topics include the preparation of potassium cyanide to making your very own Sten gun from scratch (and by that I mean from pieces of metal).

I bought these items, by the way, so that someone else couldn't.

As my mother said to all of her four children when she sent me off to learn to shoot, under qualified instructors, at the local rifle range, "There are too damned many guns out there and I want you kids to know enough to handle them safely and not be afraid of them."