This site confused me. It seemed like over half the navigation items weren't working which lead me to think the site isn't finished. That's not the case - it's just largely behind a paywall and doesn't make that obvious.
As the first paragraph explains, "This book is different from usual books. It does not come finished." The idea is to write a living book and share as I go. If you do not want early versions, skip for now and return later.
Suppose you like to explore the beginning of data engineering and challenges; you might find the intro chapters interesting. The greyed-out chapters are the ones I'm working on, and I'm planning to publish them later down the road.
Regarding the paywall, as mentioned here [1], part 2/3 of the chapters are closed, except for sponsored chapters such as The History of Data Orchestration [2]. I need to clarify what's free and what's not. Thanks for the hint.
