Ah, linear algebra, the subject which most people don't understand but can solve the problems easily.
Nicely done! and I am so happy to see Gilbert Strang on the reference list. The MIT courseware on linear algebra by this guy is pure gold! I mean I want to unlearn linear algebra and watch those lectures again.
Cool. Math was really taught very badly when I was young. And I am happy that people have more resources now to get quality study materials.