Hello, here are some things that you'll want to know when developing for this website:
Courses Page
jQuery Library - To use the jQuery Library, I needed to import it into the website. You can find it at settings -> code injection -> header
JavaScript and CSS for courses list - this can be found in page -> settings -> advanced
Website in General
Removed "Powered By Squarespace" in the footer - You can find where I did this in settings -> code injection -> header