I want to understand what quantum entanglement is and what role does it play in quantum error correction.

I also want to know if there is any classical analogy for quantum entanglement.

EDIT:

As per the suggestions of @JamesWootton and @NielDeBeaudrap, I have asked a separate question for the classical analogy here.

I want to understand what quantum entanglement is and what role does it play in quantum error correction.

NOTE: As per the suggestions of @JamesWootton and @NielDeBeaudrap, I have asked a separate question for the classical analogy here.