Back to the basics. In this article Dave goes over exactly what React does (and more importantly, what it doesn't do).
In this article, Shopify's VP of Engineering, Farhan Thawar, discusses the reasons the Shopify team has chosen to build all new mobile apps using React Native, after year of native mobile development. It's a great read.
This comprehensive article explains what unit testing is, why it’s needed, and the best practices for small to large React applications.