Some great blog posts about anesthesiology.
A teriffic, free, and well-written introduction to anesthesiology: Understanding Anesthesia by Karen Raymer
David Lyness' of Propofology high quality An Absolute Beginner's Guide to Anaesthetics
Free, well-produced textbook from U. Toronto: Anesthesia for Medical Students
Stanford University Medical Center Department of Anesthesiology 2018 CA-1 Tutorial Textbook
The Society for Education in Anesthesia (SEA) Medical Student Guide to Anesthesiology