https://www.youtube.com/watch?v=WUvTyaaNkzM https://www.youtube.com/watch?v=WUvTyaaNkzM check out this series (he also has a really good one on linear algebra)

https://www.youtube.com/watch?v=WUvTyaaNkzM https://www.youtube.com/watch?v=WUvTyaaNkzM check out this series (he also has a really good one on linear algebra) After that, I'd check out Khan academy.