Version control with a team of non-developers

You can try using Source Tree https://www.sourcetreeapp.com/, no need to learn heavily the command line git, all the non coders need to do is copy their files to your repo, then commit and push if there are no complications that will arise.

The only bad side of this is if there will be merge issues that needs to be resolved, it might mess up the code or you can’t proceed pushing your changes