We will use p5.js when during this course. p5.js is a JavaScript library for creative coding, and it makes coding on the canvas easy, fast, accessible, and inclusive.
This is just an information for you and you don’t need to download anything. You can find more infos and examples on their website.
A library is code that other people have created for you to reuse. p5.js is open source, that means you can read the source code, change it, and contribute to it, if you like.