It took an amazing amount of work but I finally got my webpack book on paper! It's almost 500 pages in its paper form and it covers a wide range of topics around webpack. I never imagined it would grow this big but you have to follow your intuition.
Check out the official release notes to learn more about the book. You can also skip straight to the free online edition to get a better idea of it.
Note that I'll be touring Europe next month so perhaps we'll see there.