>>13232424Based on what I've seen of it, I think Khan is good for developing mechanical facility and a general conceptual understanding in calculus, linear algebra, etc, but there's really no substitute for reading the classic texts that you see all the fiveheads recommend.
A similar resource is Paul's Notes (
https://tutorial.math.lamar.edu/), though even in terms of this mechanical facility and general conceptual understanding, I found the Calc II material a little wanting (e.g., when it comes to the subtleties and pitfalls of trig substitutions).
My current approach is as follows: (1) Skip Khan-tier sites, YouTube vids, Paul-tier lecture notes, etc., and use a publishing-industrial-complex textbook to get down the mechanical facility and general conceptual understanding. For linear algebra, this might be something like one of Anton's or Lay's linear algebra textbooks. (2) Then deepen that understanding with a fivehead book. For linear algebra, this might be Hoffman & Kunze's book.
