I'm not squeamish at all oddly. I also haven't had to treat more than excessive bleeding that ended up needing stitches. I have a pretty extensive FAK for my home and a decently equipped one in my vehicle. I carry a boo boo kit with me as well. I think I've told the story of my roommates kid who busted his head open. I had to take control to tell people who were nice enough to want to help yet with all bad ideas to back away. As has been said, knowing what not to do is as important as knowing what to do.
I'd like to do the American Red Cross wilderness and remote first aid course which aligns with OSHA’s Best Practices for Workplace First Aid Training Program. I think I spend enough time outdoors to warrant the certification.