Thanks, I'll hit youtube over the weekend

Chapter 21 in the attached pdf gives a brief overview.

There's also a (very challenging, I would guess 150-300 hours time commitment) MIT course online: https://ocw.mit.edu/courses/mathematics/18-06sc-linear-algeb... But it has videos.

I would focus on Chapter 21 in the pdf because it tells you exactly what you need for this application. And supplement it as needed.

i recommend this series

https://www.youtube.com/watch?v=fNk_zzaMoSs

I would recommend 3blue1brown only if you've already covered the material in another way. It's a great way to get some new intuition about things, the videos can help something 'click' and are a pleasant watch with an obviously high production quality. I just don't think they are great for being your first exposure to a topic.

Thanks, I'll check it out. This is one of those things which I never knew I didn't know about.

Goes very well with your username.