The anarchist cookbook

This may not be terribly well-researched, and the intended social value is certainly dubious as Powell himself will attest.

But, access to a transcribed version of this on the nascent Internet was very important to my social development. No, I didn't become an anarchist, but I was turned onto phreaking and experimenting with fireworks (of harm only to myself). In many ways, it contributed more to my scientific stance than any formal education.