Home education research links
International Center for Home Education Research: http://www.icher.org/
While this centre is based in the US it contains a wealth of information on home education and home education research. Two of its board members are Robert Kunzman and Milton Gaither, noted home education authors. This is certainly the key site for information relating to broad research into home education.
Other education: Journal of educational alternatives:
http://www.othereducation.stir.ac.uk/index.php/OE
Home education associations
http://www.home-ed.vic.edu.au/
Home education resources
http://www.homeschoolingdownunder.com/index.html
http://homeschoolaustralia.com/
http://www.det.wa.edu.au/homeeducation/detcms/portal/ (WA Deparment of Education)
Home education forums
http://community.aussiehomeschool.com.au/