Udacity has a couple free linear algebra courses. One here: https://www.udacity.com/course/linear-algebra-refresher-course--ud953 https://www.udacity.com/cours

Udacity has a couple free linear algebra courses. One here: https://www.udacity.com/course/linear-algebra-refresher-course--ud953 https://www.udacity.com/course/linear-algebra-refresher-cour... And another here: https://www.udacity.com/course/intro-algebra-review--ma004 https://www.udacity.com/course/intro-algebra-review--ma004