Can someone explain quantum entanglement in simple terms?

[MadisonBG]

I've been reading about quantum entanglement and I'm trying to wrap my head around it. From what I understand, when particles become entangled, their properties become linked no matter how far apart they are. But how does this actually work? Is there a good analogy that helps explain quantum entanglement? I've heard it described as "spooky action at a distance" but that doesn't really clarify things for me. What are the key experiments that demonstrate quantum entanglement?