The following is a list of Plasma related resources:
NRL Plasma Formulary, 2002 Revised Edition: Formulary PDF file (PDF)
MIT Plasma Science and Fusion Center
The World Wide Web Virtual Library Plasma Science and Technology - Resources
The Coalition for Plasma Science
Princeton Plasma Physics Laboratory
Plasma Science and Technology Newsgroup: Usenet - sci.physics.plasma (You may need to access this manually)