“nor” is like this or that in the negative. For example, I don’t like fish nor do I like beef. Does that help?

Hi- I'd just like to add that "nor" isn't frequently used in English anymore. You can just write/say "or" most of the time. "Nor" sounds very formal.

Nor is used when listing things in the negative and replaces "or" when in negative. It is often used following neither but it does not have to follow neither. EX. I don't want to go swimming nor to the beach. I don't want to become neither a doctor nor a nurse.