The lecture notes below supplement the textbook: Strogatz, Steven H. Nonlinear Dynamics and Chaos: With Applications to Physics, Biology, Chemistry, and Engineering. Westview Press, 2014. ISBN: 9780813349107. [Preview with Google Books]
Selected Lecture Notes from Fall 2012 (PDF)
Bead Moving along a Thin, Rigid Wire (PDF)
Bifurcations: Baby Normal Forms (PDF)
Tricky Asymptotics Fixed Point Notes (PDF)