According to the README, you seem to want to use the CC BY-NC-SA (Attribution-NonCommercial-ShareAlike 4.0 International) license. It accomplishes almost exactly what is in the README, although I think you still need to specify any extra people to credit.
Attribution: Give credit, link to license, indicate changes (if any).
NonCommercial: Don't use for commercial purposes (basically, don't use if you want to gain money from it).
ShareAlike: License is unchangeable.
According to the README, you seem to want to use the CC BY-NC-SA (Attribution-NonCommercial-ShareAlike 4.0 International) license. It accomplishes almost exactly what is in the README, although I think you still need to specify any extra people to credit.
Attribution: Give credit, link to license, indicate changes (if any). NonCommercial: Don't use for commercial purposes (basically, don't use if you want to gain money from it). ShareAlike: License is unchangeable.