http://www.plasmas.org/rot-plasmas.htm
This explains and compares plasma to solid, liquid, and gaseous states.
http://www.flattvpeople.com/tutorials/plasma-applications.asp
http://www.plasmacoalition.org/events.htm
Coalition for Plasma Science Home Page
http://www.plasmacoalition.org/news.htm
Issues of Plasma News Archives, html and pdf