github.com/brunolm/react-how-to is a repository that shows how to do things by example.
Each Pull Request on this repository is a complete guide on how to do something, for example if you want to add
redux to your project you can just check this Pull Request and see some instructions and all changes required.
If you want to setup tests check this Pull Request.
Better than just reading some instructions you get a full example and a working project as a guide.