
There are many resources that can teach you the little pieces. No one tells you how to put them together to build real applications.
Most applications need to be extended, modified and supported. To work productively you need more than just knowledge of React. You need to know how to structure a codebase, what practices to follow when building components and how to make trade offs.
Tao of React contains proven rules and guidelines to build better software. You will learn more about application structure, component design, testing and performance.