Studying for math after returning from gap year

Background: I graduated high school in 2014, and deferred with RIT until January 2016. I’m studying Software Engineering (https://www.rit.edu/programs/software-engineering-bs). I’ve been working over my gap year and have not taken any classes.

I’m going to try getting into MATH-181, but I’m out of practice in studying for math. Any tips or advice for getting back up to speed with calculus?