Have you heard of PECS but not really sure what it is?  Would you like to implement a five-point scale, but not exactly sure how?  The Autism Internet Modules were developed with one aim in mind: to make comprehensive,up-to-date, and usable information on autism accessible and applicable to educators, other professionals, and families who support individuals with autism spectrum disorders (ASD).  Written by experts from across the U.S., all online modules are free, and are designed to promote understanding of, respect for, and equality of persons with ASD.

You do have to create a log in, but the modules are free.  You can pay a small fee to receive a certificate of completion.