basic vector algebra for data scientists
https://www.youtube.com/watch?v=-UlILADHARI&list=PLAKBwakacHbQP4h3apZihw1wb5cGvXby1
Linear Algebra for Data science
Linear Algebra - Full College Course
The math you actually need to know for data science.
Ruben van de Geer: A Primer (or Refresher) On Linear Algebra for Data Science | PyData London 2019