I would start with vectors and physics.

Note that there is some basic calculus involved in both of those.

The Wikipedia is a bit dense, but if you take the time to follow links to concepts that you aren't familiar with you should be good.

https://en.wikipedia.org/wiki/Vector_calculus

You might have done a little bit of calculus with High School trig without knowing it. Sometimes Trig is mixed in with Analysis for some nuanced reasons.

I would check out the Khan academy post for a basic grounding in calculus.

https://www.khanacademy.org/math/calculus-home/limits-and-co...