Review this video to learn to use lateral reading to evaluate information.
Lateral reading is a technique that involves reviewing additional sources of information about an author, publication, claim, or organization. If you think of vertical reading as moving up and down a page to read its contents, then lateral reading represents opening more tabs to find more sources about the contents of the original page. 
Don't take a single source's word on its own! Instead, read laterally, and find more information to confirm or deny claims.