Let me be a little more precise here. What you basically need to know here is that entanglement describes a
correlation between measurements, and you cannot know whether that correlation exists until you collect those measurements together. This is the fundamental reason why it does not "transmit information" faster than light in a certain sense. However, that phrasing is misleading because you can use it to do things which would otherwise require transmitting information faster than light.
I like to illustrate this by a game based on "GHZ states" which I call "Betrayal." The idea is that there are 3 people working together, but I'm going to make one of them work at cross-purposes to the other two. If the team can recover gracefully from my mischief with high probability, then they all win a big cash prize.
The game is simple: the three people can prepare however they want in advance, but then they must go into different (relativistically-separated) rooms, look at a screen with words on it, and hit either a button labelled 0 or a button labeled 1. Then I collect these three numbers and sum them up, to get The Sum. So if Alice hits 1, and Bob hits 0, and Carol hits 1, then the Sum is 2.
On the screens in the rooms, I give them a task. Sometimes I do a "control" experiment: I tell all three of them "Make the sum even," and the team wins if it's even. Sometimes I create a traitor: I tell two of them, "make the sum odd", and one of them "make the sum even", and the team wins if it's odd.
Three classical players cannot beat this game 100% of the time, no matter how they prepare in advance. Three quantum players (i.e., three players sharing an entangled Greenberger-Horne–Zeilinger state) can. So if we repeat the game enough times, they can convince me that they can beat the game with higher probability than the classical limit, and thus win the big cash prize.