Rea Magnet Wire
Informative wire table, information on various insulation formulations. HV
Robin's Tesla Coil
Description of how it was built and what it looks like running, including photos of every component, finished, and as it was being made.
Tech Corner by George Hrischenko VE3DXG
Schematic for a HV High Current voltage doubler. Uses MOT's.
Tesla Coil Construction article
A how to article from "Nuts and Volts" Magazine. Good set of plans for your first coil.
Tesla Coil Ring
Several hundred sites about Tesla Coils, construction, safety, hints, materials, and theory.
Tesla Coil Tuner
Ever wonder how to find the resonant frequency of your Tesla Coil, build this and know what it is.
Tesla coils
The Arcstarter Page. A journey through building a coil, well documented.This is about some older coils, but classics.