Welcome to the most confusing subject in physics. Where the rules are made up, and the laws of reality are bent.
Understand Heisenberg's Uncertainty Principle, because, you know, everything is uncertain.
It's like being in a state of perpetual indecision, but with more math.
It's like being connected to your doppelganger, but without the existential dread.
Understand entanglement, because, you know, it's a real thing.