My favorite places to shop for homeschool curriculum:
Rainbow Resource
https://www.rainbowresource.com
Christian Book Store
http://www.christianbook.com/ā
Abe Books
Homeschool Legal Expertise/Insurance:
Homeschool Legal Defense Association
HSLDA.org
Favorite Boxed Curriculum
The Good and the Beautiful
http://www.jennyphillips.com/good-beautiful/
Sonlight
Timberdoodle
Winters Promise