I agree with taking first aid course, knowledge is key, but do not stop there, there is a lot to learn without going to medical school or college.
Off course there are lot of nonsense on line, but still you can learn useful stuff from medical field that you gonna need when SHTF.
First aid course is great, and covers a lot important topics, but it is not about prolonged or in depth care.
It is just start, after that go and learn how to (for example) take prolonged wound care, antibiotic usage, cleaning drainage, debridement…
It is good list Husky, it can be always longer just like with any prepper list.