The Internet has proven an invaluable resource for activists, and those interested in helping end the prohibition against medical use of marijuana have mobilized around it as a way of spreading information and encouraging involvement at all levels.

Up to date press coverage
Media Awareness Project-- a tremendous resource for balanced media coverage in the war on drugs. MAP compiles drug-related stories from nationwide media sources for easy searching. Look for "Cannabis-Medicinal" under Focal Points
The Schaffer Drug Library
Other organizations to get involved in

Marijuana Myths, Marijuana Facts, Lynn Zimmer and John Morgan (The Lindesmith Center, 1997)
Marihuana Reconsidered, Lester Grinspoon (Harvard University Press, 1994 - 3rd edition)
Marihuana, The Forbidden Medicine, Lester Grinspoon, M.D., James B. Bakalar (Yale University Press, 1993)
Waiting to Inhale : The Politics of Medical Marijuana by Alan W. Bock (Paperback - January 2001)