These resources are by no mean complete. I have focused more on critical thinking as applied to medicine rather than literary critical thinking.
Resources for critical thinking
This one is specifically for clinicians: https://www.improvediagnosis.org/page/Clinicians
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5372826/ This paper discusses some of what I have noticed when looking for information on critical thinking - namely lack of a clear definition, as well as lack of a consistent approach to teaching it.