I did my 1st aid course through work. Had to use it a few times but luckily nothing too bad so far, unlike the guys I was doing the course with. A fork truck skewering a guy through the ankle springs to mind
The first aid instructor was asked about children's first aid but said it was a different course as i was doing a first aid at work course!!! A few months later my Martial Arts instructor ran a Sports First Aid course
Tap in first aid courses into Google and you'll find info on one near you.
If you can, do it, you never know when you may need it.