Tactics
I love the enthusiasm. I've seen a few posts with videos on tactics over the last few weeks. It's great to have a conceptual understanding of these things but they're very different in practice.
If I'm being completely honest, we're discussing tactics and techniques that are far above what you will realistically see as an individual civilian. If you want to LARP with your buddies in the woods, that's another story.
Are you really going to enter and clear a room in your house with a ghost fire team or are you gonna post up in a corner and aim at the door?
Are you really going to engage and advance on multiple targets with mag changes like in a match or are you just going to fire a few shots at your assailant and break contact?
By all means school yourself in small unit tactics but think about the most likely courses of action be in CCW or home defense.