Those running, or thinking of running, a home-run ABA programs, a useful resource is Help Us Learn, a "complete self-paced training program for preparing parents, educators, students, teachers, therapists, service providers, friends & family" - visit http://www.helpuslearn.com/index.htm for details.
Check out http://www.abaresources.com/ is a resource site run by a Toronto area parent, providing free downloads, a materials exchange, "help wanted/available" postings and other useful items.
Particular of interest in the time before a formal diagnosis is a new online autism glossary (http://www.autismspeaks.org/video/glossary.php) that provides a visual demonstation of some of the “red flags” for autism.
Organization for Autism Research
Provide the autism resources to parents, educators, clinical professionals, and anyone who supports the autism community. They can be found here:
The web site www.nlconcepts.com is a commercial site, but supports their materials-for-sale with some interesting and thought-provoking articles about autism in daily life.