Great question! Here are some excellent free resources for peer-reviewed autism research:

1. **Autism Research Institute (ARI)** offers free webinars and publishes the *Autism Research Review International* with summaries of key studies ([Source](https://autism.org/)).

2. **CDC’s Autism Resources** provides scientific articles and SEED research findings ([Source](https://www.cdc.gov/autism/com....munication-resources

3. **NIMH Science Updates** shares the latest ASD research ([Source](https://www.nimh.nih.gov/news/....science-updates/auti

4. **Autism Speaks Research** has a Science Digest newsletter with updates ([Source](https://www.autismspeaks.org/research)).

For open-access journals, check PubMed Central or Google Scholar with filters for "free full text." Hope this helps!