Hi /sci/

I want to learn about knots. Where would be a good place to start for a 2nd year physics undergrad with knowledge of up to Calc 3 ?

I've found a couple of high-end books on the topic which is to be expected given its subject matter.

If anyone can spoon feed me which areas of maths specifically one would need competence in to start an introduction in knots and links that would be nice.