PrepMedic and SkinnyMedic on YouTube have some great videos to watch. People knock YouTube, but anyone who's ever bene in a med school class (without lawyer disclaimers) knows the protocol is: Watch one. Do one. Teach one.
While videos alone don't make expertise, expert is a relative quality. And videos DO give you the ability to plan and organize your training time and resources to get maximal value out of what we do.
I do have advanced life support practice and training. But as I tell my wife often: If someone needs a needle decompression, they're not going to be asking for my certificate first. And one of the best trauma med docs whose med school class I audited even advised "Decompress them both. The risk of not getting decompression is higher than the risk of doing them both if done properly." I have watched numerous videos on various procedures and am likely to be watching a needle decompression on a cadaver while waiting for the waiter to bring my drink. Because...'Murica.
So there's an art to it that only the guy who patches six bullet holes a day knows. A lot of what we do is preparing to have skills that we hope to never have to use. Unless you live in Chicago, your chances of doing multiple bullet holes per day are slim to none. You're more likely to use a Heimlich. Which, in three decades of training, I've only actually used twice. Now I have a de-choker...that hopefully always gathers dust.