I'm referring to subjective experience. Which neurons have to fire for me to experience the subjective taste of chocolate? And how many neurons do I need before that can happen?
The book as a whole gives you the tools to understand how emergence happens in the brain. I can point you to the resource, but I can’t do the learning for you.
It’s also possible you’re less interested in the brain per se, and more interested in “emergence” in the abstract. If that’s the case, there is no shortage of good books and resources you can turn to.
Look up “emergence science” and “complexity science” and go from there: it’s not an easy topic, it’s very cross-disciplinary, and to really understand it requires a fair amount of maths (imo).