The Cambridge Companion to Bertrand Russell - http://ndpr.nd.edu/review.cfm?id=1441 Arthur Sullivan reviews this collection of essays edited by Nicholas Griffin. From Notre Dame Philosophical Reviews.
Bertrand Russell Society - http://www.users.drew.edu/~jlenz/brs.html Association dedicated to the memory and legacy of this thinker. Features news, membership information, links and events.
Stanford Encyclopedia of Philosophy: Bertrand Russell - http://plato.stanford.edu/entries/russell/ Biography including picture, timeline, sketch of his intellectual development. Also features bibliography, links.
Russell's Paradox - http://plato.stanford.edu/entries/russell-paradox/ A nuanced article on this paradox of naive set theory, happened upon by Russell in 1901. Includes bibliography, links to related articles.
Anarchist Archives: Bertrand Russell - http://dwardmac.pitzer.edu/Anarchist_Archives/bright/russell/ Contains biography and extensive bibliography of Bertrand Russell, as well as links to online texts and other sources.
The Bertrand Russell Research Centre - http://www.humanities.mcmaster.ca/~russell/ A project intended to bring together papers of Bertrand Russell at McMaster University. News, links, administrative information.
The Bertrand Russell Archives - http://www.mcmaster.ca/russdocs/russell.htm Houses the largest Russell-related archive of materials in existence, including Russell's library and his personal correspondence. Site features contact information and annotated links.
The Bertrand Russell Gallery - http://www.humanities.mcmaster.ca/~bertrand/ A detailed biography at McMaster University.