He walks you though all the way from the rationale, to a simple algebraic example, to the full blown Linear Algebraic Matrix solution. It's really worth watching even just the first couple videos to get a deeper understanding of this very useful technique.
it's not 55 videos (dunno if he forgot to upload them or misnumbered them...). Also most of it (I'd say 70%) is him doing matrix multiplications on a whiteboard. Which is excellent if you need a refresher in linear algebra (or just suck at it ;)), otherwise you can skip a lot of the content. That aside, he does an excellent job explaining it.
https://www.youtube.com/watch?v=CaCcOwJPytQ
He walks you though all the way from the rationale, to a simple algebraic example, to the full blown Linear Algebraic Matrix solution. It's really worth watching even just the first couple videos to get a deeper understanding of this very useful technique.