I'd recommend looking at PatrickJMT's videos[1] – he does the same as Khan Academy for math but a lot of his content is undergrad and above. [1] https://www.yo

I'd recommend looking at PatrickJMT's videos[1] – he does the same as Khan Academy for math but a lot of his content is undergrad and above. [1] https://www.youtube.com/c/patrickjmt https://www.youtube.com/c/patrickjmt