Most of these are couresy: Palo Alto Menlo Park Parents club of which am a member
You might already be aware of these. But here are some...
So, there is RDI (Relationship Intervention Development) and Floortime and Son-Rise - all good programs and you can Google them and read about them on the web.
There is a lot of information and empirical research on ABA - Applied Behavioral Analysis.
There is a great special education law website called Wrightslaw that is very informative for parents who will be dealing with school districts.
There is the regional center system to learn about, the ones here are San Andreas Regional Center for Santa Clara County and Golden Gate Regional Center for San Mateo County.
There are biomedical groups like TACA (Talk About Curing Autism) and DAN! (Defeat Autism Now!) and there is Autism Speaks - all have research-based agendas.
There is research behind the work of Michelle Garcia Winner (Social Thinking) and Carol Gray (Social Stories) and Stanley Greenspan (DIR - Developmental Individual-Difference Research-Based). These are good people to know about.
All of the above terms, searched for separately with Google and with the word "autism" will give a lot of information.
For Asperger Syndrome, OASIS is great - Online Asperger Syndrome Information and Support
Yale University has good information on autism, as does UC Davis' M.I.N.D. Institute.
For autism, look at the autism speaks website and the MIND Institute at Davis
There is/are very active Yahoo groups as well on autism
Happy reading and finding! It will be great if you can share some wisdom that you learn...