Creative Commons is a type of copyright that allows for certain kinds of editing, distribution and even sales of items such as books, photos, audio and video. The Creative commons website (https://creativecommons.org/about/cclicenses/ ) summarizes it like this:
Creative Commons licenses give everyone from individual creators to large institutions a standardized way to grant the public permission to use their creative work under copyright law. From the reuser’s perspective, the presence of a Creative Commons license on a copyrighted work answers the question, “What can I do with this work?”
There are six different license types, listed from most to least permissive here:
CC BY includes the following elements:
BY – Credit must be given to the creator
CC BY-SA includes the following elements:
BY – Credit must be given to the creator
SA – Adaptations must be shared under the same terms
It includes the following elements:
BY – Credit must be given to the creator
NC – Only noncommercial uses of the work are permitted
CC BY-NC-SA includes the following elements:
BY – Credit must be given to the creator
NC – Only noncommercial uses of the work are permitted
SA – Adaptations must be shared under the same terms
CC BY-ND includes the following elements:
BY – Credit must be given to the creator
ND – No derivatives or adaptations of the work are permitted
CC BY-NC-ND includes the following elements:
BY – Credit must be given to the creator
NC – Only noncommercial uses of the work are permitted
ND – No derivatives or adaptations of the work are permitted
CC0 (aka CC Zero) is a public dedication tool, which allows creators to give up their copyright and put their works into the worldwide public domain. CC0 allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, with no conditions.
You can search for images you are allowed to use, edit and distribute by using settings on google, or by using this search engine: https://ccsearch.creativecommons.org/