E-tutor
http://www.e-tutor.com/
A

Homeschool.com
http://www.homeschool.com/
Called a virtual home school, this site has advocacy information, a resource guide, and bookstore.  There are numerous articles and curriculum information pages.  

Home School Defense Association
http://www.hslda.org/
The Home School Legal Defense Association is a non-profit advocacy organization established to defend and advance the constitutional right of parents to direct the education of their children
and to protect family freedoms.  Its primary purpose is to inform the public about political and legal issues relating to home schooling.  

Home School World
http://www.home-school.com/
Hosted by the publishers of Practical Homeschooling magazine, this site has a wide range of resources and links.