The YouTube channel 3blue1brown has a good "Essence of calculus" [1] and "Differential equations, a tourist's guide" [2] series that I enjoyed a lot as someone

The YouTube channel 3blue1brown has a good "Essence of calculus" [1] and "Differential equations, a tourist's guide" [2] series that I enjoyed a lot as someone who took calc in college but hasn't used it since. [1] https://www.youtube.com/playlist?list=PLZHQObOWTQDMsr9K-rj53DwVRMYO3t5Yr https://www.youtube.com/playlist?list=PLZHQObOWTQDMsr9K-rj53... [2] https://www.youtube.com/playlist?list=PLZHQObOWTQDNPOjrT6KVlfJuKtYTftqH6 https://www.youtube.com/playlist?list=PLZHQObOWTQDNPOjrT6KVl...