If you like videos, but not Khan, give Gilbert Strang's videos at MIT a look. His teaching is fantastic, and he wrote several of the core texts. Or you can just work directly from his books if you prefer that approach.
https://www.math.ucdavis.edu/~linear/
or
http://joshua.smcvt.edu/linearalgebra/
This is also a handy resource to keep around:
https://people.math.gatech.edu/~cain/textbooks/onlinebooks.h...