Use CC licenced images wherever possible as they are free and easy to use. Listed below are CC licenced image repositories:
Search for CC images using these search tools:
You should:
You can use:
Click on the Openverse link below to search for free images with easy attribution.
Image by Creative Commons under a CC BY 4.0 licence
Image from Compfight
Blossoms on Capitol Hill by John Brighenti from Flickr via Compfight CC BY 2.0
Image from Burst
Image from CC Search Tool
"geisha"by Kate Nevens is licensed under CC BY 2.0
Image from Pexels
Woman Wearing a Kimono Holding Umbrella by Evgeny Tchebotarev from Pexels CC0 1.0
Image from CC Search Tool
Image from Unsplash
Kyoto, Japan by Sorasak from Unsplash CC0 1.0
When using images from stock image libraries and freely available images from the Internet, always check the terms and conditions of each site for copyright and attribution requirements.