Reference sources summarize research information in easy-to-understand articles. You're probably familiar with reference sources like Wikipedia and imdb.com. For evidence-based practice, you'll have to use peer-reviewed health care reference sites.
Of course we find images and stream videos online all the time from YouTube and social media sites. You want to make sure health care images and videos are professionally created by experts in the field.
Peer-reviewed journals are the best source of research evidence. They're where health researchers publish results of research studies testing the effectiveness of drugs, interventions, and practices.
The best peer-reviewed journals aren't usually free, though, so you can't find them through Google. Since the school buys subscriptions, you can access them for free through these sites.