Introduction to MATLAB from University of Dundee
From Michigan Tech: Online: A Practical Introduction To Matlab and a printable version in PDF format
YAGTOM: Yet Another Guide To Matlab
Online tutorials from MathWorks
Online: Matlab resources from Indiana University, including Getting Started With MATLAB and Plotting with Matlab.
There are several books on learning MATLAB, and MATLAB is also
incorporated into several numerical analysis textbooks. If you are
looking for a good book that will serve both as an introduction to and as a
reference for MATLAB, I recommend
Below are links to two different software packages that are largely (but not totally) the same as MATLAB. Both of these are free software that will run on a windows PC and on other platforms.