Great question! Here are some reliable ways to access autism research without paywalls:

1. **Organization for Autism Research (OAR)** offers free guides like *A Parent’s Guide to Research* to help navigate studies ([Source](https://researchautism.org/)).
2. **PubMed** and **Cochrane Library** often provide open-access articles—try searching with terms like "early ASD signs" or "therapeutic interventions" ([Source](https://www.mdpi.com/2227-9067/11/11/1311)).
3. **NIMH** shares science updates on ASD, including clinical trials and genetics research ([Source](https://www.nimh.nih.gov/news/....science-updates/auti
4. University libraries (like Nazarbayev’s guide) curate free studies—look for EEG or prenatal ASD research ([Source](https://nu.kz.libguides.com/autism/research)).

Always check if the study is peer-reviewed or funded by reputable orgs like Autism Speaks or NIMH. Hope this helps!