There is an abundance of legal theory and philosophy resources online. This is merely a selection.
Australian Society of Legal Philosophy
http://www.law.monash.edu.au/about-us/industry-and-community/aslp/
International Association for Philosophy of Law and Social Philosophy
http://www.ivronline.org/
Australian Legal Philosophy Students Association
http://alpsa-alpsa.blogspot.com/
Cambridge Forum for Legal and Political Philosophy
http://www.cflpp.law.cam.ac.uk
Columbia Legal Theory Workshop
http://www.law.columbia.edu/center_program/legal_theory
Edinburgh Legal Theory Research Group
http://www.law.ed.ac.uk/legaltheory/
European University Institute Law Department
http://www.eui.eu/DepartmentsAndCentres/Law/Index.aspx
European Academy of Legal Theory
http://www.legaltheory.eu
Kadish Center for Morality, Law and Public Affairs
http://www.law.berkeley.edu/kadish.htm
NYU Colloquium in Legal, Political and Social Philosophy
http://www.law.nyu.edu/academics/colloquia/index.htm
Legal Philosophy in Oxford
http://www.law.ox.ac.uk/jurisprudence/
Legal Theory Blog
http://lsolum.blogspot.com/
Pennsylvania Institute for Law and Philosophy
http://www.law.upenn.edu/academics/institutes/ilp/
Rutgers Institute for Law and Philosophy
http://lawandphil.rutgers.edu/
Stanford Encyclopaedia of Philosophy
http://plato.stanford.edu
UCL Colloquium in Legal and Social Philosophy
http://www.ucl.ac.uk/laws/jurisprudence/index.shtml?colloquia
Yale Center for Law and Philosophy
http://www.law.yale.edu/yclp/
Yale Law School Legal Theory Workshop
http://www.law.yale.edu/intellectuallife/ltw.htm
IVR Encyclopaedia of Jurisprudence, Legal Theory and Philosophy of Law
http://www.ivr-enc.info/