Linear algebra is ostensibly the mathematics used to solve linear equations, but in practice it is the generalization of basic algebra to multidimensional objects. Since multivariate objects are of great importance in data science, linear algebra is an essential tool for any data scientist. Many find linear algebra a dull subject, but proficiency is required for more advanced topics. So, even if you can't find beauty in linear algebra, know that the effort you put into mastering it will be rewarded in other data science disciplines.
Visualization of Some Common Linear Transformations
Recommended Books

Introduction to Linear Algebra
W. Gilbert Strang
Key Features
 Intext exercises
 Answers to all exercises
 Extensive supplementary materials
Key Topics
 Complex Vectors
 Determinants
 Eigenvalues and Eigenvectors
 Fast Fourier Transform
 Inverse Matrices
 Linear Equations
 Linear Programming
 Linear Transformations
 Projections
 Singular Value Decomposition
 Vector Spaces
 Vectors
Description
If you have never studied linear algebra before, this is the book for you. Frankly, there are more coherent linear algebra books than this one. However, the most important aspect of learning linear algebra is practicing with exercises, and this book comes with an extensive collection. Plus, there are solutions available on the book's website. Strang's book is also associated with a set of video lectures and other supplementary material available here. The applications chapter is excellent. It includes: graphs and networks, linear programming, Fourier series, computer graphics, cryptography, and more.

Linear Algebra Done Right
Sheldon J. Axler
Key Features
 Intext exercises
 Errata
Key Topics
 Determinants
 Duality
 Eigenvalues and Eigenvectors
 Inner Product Spaces
 Invertibility
 Linear Maps
 Operators on Various Spaces
 Polynomials
 Singular Value Decomposition
 Spectral Theorem
 Vector Spaces
Description
Linear Algebra Done Right is a much more
pure math
take on linear algebra than typical texts. We don't recommend this book as a first look for the purposes of data science. However, if you have studied linear algebra already and want a more rigorous and mathematical book than the typical applied text, Axler is a great option. If you find determinants unintuitive, you'll be pleased that this book largely avoids using them.