1. Solid recorded talk (on YouTube) on using npm run-script to automate local builds: https://www.youtube.com/watch?v=0RYETb9YVrk
3. Webpack -- The Confusing Parts: https://medium.com/@rajaraodv/webpack-the-confusing-parts-58... -- long post that goes into depth on Webpack, in particular.
Aside from all of these, the book I have found the most helpful if you want to zoom straight ahead to React is "Road to React": https://leanpub.com/the-road-to-learn-react
It's 200 pages, oriented around real code, and straightforward.