University of Technology Sydney (UTS) – Systems Thinking (free) https://open.uts.edu.au/faculty/institute-for-sustainable-futures/systems-thinking/
Acumen Academy – Systems Practice (pay what you can) https://acumenacademy.org/course/systems-practice/
Coursera – Systems Thinking in Public Health (Johns Hopkins) (free to audit) https://www.coursera.org/learn/systems-thinking
Coursera – Systems Thinking Basics (free to audit) https://www.coursera.org/learn/systems-thinking-basics
FutureLearn – Systems Thinking and Complexity: https://www.futurelearn.com/courses/systems-thinking-complexity