https://www.complexityexplorer.org/courses/185-introduction-...
This free course is based on her book "Complexity: A Guided Tour"
https://www.amazon.com/Complexity-Guided-Tour-Melanie-Mitche...
Other names/references include "The nature of computation" Stuart kauffman. "Nonlinear dynamics and chaos"
Too many stat mech books to possibly recommend, for the idea of emergence you'll want something including phase transitions so... Can't go wrong with 'thermodynamics and an introduction to thermostatistics". And for stat mech with lots of complex systems diversions, Sethna's book is excellent but difficult to learn from. "Entropy, complexity, and order parameters. Names in thermo/complexity: Sethna Goldenfeld Parisi HE stanley
Finally, it's hard to talk about complex systems without talking about networks, "Networks"-Newman is unambiguously the best choice. Names in networks: Mark Newman Reka Albert Avoid barabasi especially more recent stuff.
There may be better lectures/resources out there I don't know of, but I would start with crutchields lectures. Note again I am coming from heavy physics bias.
I actually haven't found many good books for 'Complex systems', but if you want to take a shot anyway, I would look at https://academic.oup.com/book/25504 and https://press.princeton.edu/books/paperback/9780691122045/cr...
I found it pretty accessible from a programmers point of view.
[0] https://www.amazon.com/COMPLEXITY-CRITICALITY-Imperial-Colle...
The blurb: "A path winds its way through a forest. Why does it go the way it goes? Did someone design it? Or was the path made smooth by feet that chose the smoothest path? Maybe some of both? Confluence examines the many ways in which organized, intentional plans (like paths we design) and self-organized, unintentional patterns (like paths that emerge where we walk) intermingle (happen at the same time and place) and interact (influence each other). The book lays out seven “thinking spaces” (like this one) that explore various aspects of the structures and relationships that flow together in our lives."
1. cross-scale interaction
2. downward causation
Would be happy to learn of other terms too.
1) https://en.wikipedia.org/wiki/Complex_system#See_also