DIY First Aid Kits
It can be expensive when you first begin prepping to get all the equipment you need. There are great packages but very expensive.
This is not only about DIY but getting good products for a good price. (dollar store or walmart), in the beginning.
These pages are also about learning to do with what you have on hand. IN a mass casualty event, you might not have 10 tourniquets, but being able to understand what is happening and how to fix it will allow you to get something done (say better). ( Also, DIY bloodstop)
I do encourage you to start getting good gear as you can afford it, but in the beginning, here we go:
https://www.youtube.com/watch?v=vJBUEToDx-c
prepmedic has good video
talks about tourniuet cheast seal and splint.
he mentions a medical term to look out for if do 4 sides on chest seal. look it up, and see what are the signs.
I imagine it's drowing in blood.