Linear algebra is simple (but ubiquitous - so you need to feel it, not only &quot;sort of follow it&quot;).<p>Some visual matrix operations are here: <a href="http:&#x2F;&#x2F;setosa.io&#x2F;ev&#x2F;" rel="nofollow">http:&#x2F;&#x2F;setosa.io&#x2F;ev&#x2F;</a>
If you want a beginner textbook, I recommend <a href="http:&#x2F;&#x2F;www.matrixanalysis.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.matrixanalysis.com&#x2F;</a><p>Again, it is simple, so maybe you can even take course and look up Wikipedia when needed (but for me it is hard to guess you level, current knowledge, etc).<p>In any case, this ML course assumes some ML knowledge.