Use these resources to find images that are free to use. Remember, even if an image is free to use, you still must cite the source (tell where it came from, including the website and author if available).
Click here to go to Creative Commons Search. It links to many places where you can find images that are free to use.
Watch this short video to learn how to find images that are free to use on Google.
Here's a tutorial on finding free images from Getty Images.