Linear algebra is the study of vectors and linear transformations on vectors, which can be represented as matrices. Learning linear algebra will open many doors for you. You need linear algebra to understand computer graphics, machine learning, quantum mechanics, error correcting codes, etc. Vectors and matrices are used all over the place! If high-school math is modelling superpowers, then linear algebra is the vector-upgrade that teaches you how to model multivariable quantities and gives you the intuition for thinking about them.THIS IS A PRE-RELEASE VERSION OF THE BOOK. The core chapters of the book are finished but some work remains on the applications chapter. I'm releasing the book early for the benefit of students who are taking a linear algebra course this term.The price is 50% off until April 1st, no joke ;) Preview (69pp, PDF)Free tutorial (4pp, PDF)Note that purchasing the pre-release version will later give you access to the finished book and all future updates.