Step 1: Learn more about your broader subject (ex: autism) to find a narrower aspect that is interesting to you by reading about it in background sources. If you've ever used Wikipedia, you already know why this is useful.
Suggested background sources in the Libraries:
(Still don't have an idea? Do a Google search and see what comes up)
Step 2: Test your narrower topic to make sure you can find sources. You may find it is too narrow to find much or too broad and you need to narrow it more. One easy way to test your topic is to search in GoogleScholar and look over the search results.
