Lots of matrices don't have an inverse.

Intuitive Math

Skill in Algebra

HN: Introduction to Applied Linear Algebra: Vectors, Matrices, and Least Squares (2018)

Immersive Linear Algebra (HN)

Relearning Matrices as Linear Functions (HN)

Thirty-three Miniatures: Mathematical and Algorithmic Applications of Linear Algebra (HN)

A Brief Guide to A Few Algebraic Structures (HN)

Margot Gerritsen on "Linear Algebra - the incredible beauty of math" (2013)

Interactive Linear Algebra (Code) (HN)

Numerical Linear Algebra for Programmers book

Oxford Linear Algebra II course (2020)

No bullshit guide to linear algebra notebooks

MIT Linear Algebra Lectures (2010)

An Intuitive Guide to Linear Algebra (2012) (HN)