I just finished my first Wilderness First Aid course - 16 hours. We learned how to do an initial assessment, check vitals, and report them if necessary. I obviously need to work on this a lot to retain it.
My first aid kit has alway been minimal. I've carried a lot more for bikes than I ever have for humans. A few bandaids and not much else, really. But now I've been exposed to all sorts of scenarios where more gear would be useful. On the other hand, I can't carry everything that might potentially be useful. I have to find a balance point.
What are your must-have items? Any particular brand or model? How do you change your first aid kit if you'll be more remote? How do you define remote? Do you pack differently for different activities - hiking, biking, horseback ...?
One thing that was super useful in the course, but I haven't found outside of the NOLS store, is a triangular sling/cravat :
https://store.nols.edu/collections/first-aid-supplies/products/cravat-triangle-bandage
I was also envious of people who had a Crazy Creek to kneel on during evaluation - not to mention that it can be used as a pretty sweet splint - but I can't imagine carrying that around while, say, mountain biking -
https://www.rei.com/product/812634/crazy-creek-the-original-chair
I was happy to see some of my favorite products being used - Tegaderm and Second Skin - but then realized I never carry any of that stuff with me. Doh.