I'm in the middle of it and I feel - maybe weird could be a right word, regading the book. It is very verbose in explaining how stupid statistics and statistic

I'm in the middle of it and I feel - maybe weird could be a right word, regading the book. It is very verbose in explaining how stupid statistics and statisticians were before the causal revolution orchestrated mainly by the author were. And how magnificiently efficient and simple these new concepts with causation diagrams are for uncovering causal relationships. But for some reason I have completely missed how you come up with these diagrams in the first place, and how you actually, practically use the data to validate if the diagram you have come up with is correct. In other words, the book has completely failed to help me build any kind of mental model how I should apply this magnificent new idea in practice. Is that just me being dumb or would there be some other sources worth reading for yhe same concepts? (Yes, I am intrigued with the question how to evaluate causal statements)