The Atlas Center: The Center for Objectivism
http://www.objectivistcenter.org/home.aspx
An "independent source of information about Objectivism," which contains information on Ayn Rand and on how to get involved in spreading Objectivism.
Objectivism Reference Center
http://www.noblesoul.com/orc/index.html
Books, essays, and links that serve as an introduction to Objectivism, including the text of Anthem.
Ayn Rand Institute
Resources for students, teachers, and media on Ayn Rand.
Criticisms of Objectivism (or Ayn Rand)
http://world.std.com/~mhuben/critobj.html
Links to articles and websites that offer counterarguments to Objectivism and to Ayn Rand's writing and reasoning style (some links are outdated).