Nimitz Library's collection includes ebooks for learning MATLAB. A few are listed below; search the catalogue for more examples.
Essential MATLAB for Engineers and Scientists by 
Introduction to MATLAB for Engineers and Scientists: Solutions for Numerical Computation and Modeling by 
Beginning MATLAB and Simulink : From Beginner to Pro by 
Learning MATLAB: A Problem Solving Approach by 
Practical MATLAB Deep Learning : A Project-Based Approach by 
Matlab: A Practical Introduction to Programming and Problem Solving by