where do i get the basic terminology of AES encryption and basci questions

See more:

All-Topics

I'm final year undergraduate, i came across this encryption standarad and when i met my professor about this encyption standarad, he said ok go on with it, but he is not willing to guide me from basics, if any of you can help me to get the AES basic terminology and basics like how sbox are created, is there any relation between sbox and inverse sbox, why number of rounds are prefixed(know there are some bits and bytes conversion) for different key lenghts, and modes of operation, difference between each of them.

Thanking you.

Yours Sincerely.