Watching these videos now, they're really good 
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RT @sarah_zrf
im gonna do it. im gonna learn dynamics. im gonna watch the videos https://twitter.com/RossDynamicsLab/status/1432690088723587076
https://twitter.com/sarah_zrf/status/1433074184578600961
Follow
The idea in this one, that you can classify the behavior around equilibria using linear algebra (because the dynamics are "locally approximately linear") is very cool.
https://www.youtube.com/watch?v=7Ewe_tVa5Fs&list=PLUeHTafWecAUqSh3Gy0NNr7H3OsXoC-aK&index=21
Classifying fixed points of 2D systemswww.youtube.com
