The React docs are good for reference but they don't focus much on offering getting started material or a tutorial for varying audiences at the level of buildin

The React docs are good for reference but they don't focus much on offering getting started material or a tutorial for varying audiences at the level of building a full app in React (or React + Redux). The way you combine components and share info across components is really what makes a React app. Personally I don't understand why they don't cover it more, but they have created a nice market opportunity for tutorial content.