This course is based on the textbook:
Fong, B. and D. I. Spivak. An Invitation to Applied Category Theory: Seven Sketches in Compositionality. Cambridge University Press, 2019. ISBN: 9781108482295.
An online version is freely available on Cornell University’s arXiv.org e-Print archive site as well as from OCW as a single file: An Invitation to Applied Category Theory: Seven Sketches in Compositionality (PDF - 2.6MB).