All about it, the theory and math behind the calculations.
http://home.earthlink.net/~jimlux/hv/corona.htm
http://efy.digitalsea.net/circuit/CIR15.HTM
Tutorial on Electro-Magnetic Compatibility
http://www.williamson-labs.com/480_emc.htm
http://www.qsl.net/vu2upx/Projects/RTC.htm
from France, very fascinating page.
http://members.aol.com/_ht_a/lyonelb/tesla.html
Interactive microelectronic training CD-ROM for students and professionals.
http://www.silicapolis.com
Online book which covers topics from ohms law to digital circuits. Contains interactive troubleshooting simulations.
http://science-ebooks.com/electronics/basic_electronics.htm
watts and VARS with a VOM
http://home.earthlink.net/~jimlux/hv/varvom.htm