Take a class on linear algebra. Learn how to use matlab or octave. Knowing these two interdependent subsets of knowledge before diving into machine learning is

Take a class on linear algebra. Learn how to use matlab or octave. Knowing these two interdependent subsets of knowledge before diving into machine learning is absolutely indispensable as far as I can tell. I would've gotten so much more out of Ng's class if I knew this stuff beforehand