A Math Refresher Course with Applications and Matlab Examples - Excellent Overview - Must Read.
Here are various tutorials that will help to learn Matlab. Read through these and then work through the commands step-by-step in the Matlab command window.
A MATLAB Tutorial - Gives quick overview of Matlab. - Work through this first.
A MATLAB Tutorial - Printable version (PDF file)
Quick 2-page summary of MATLAB
Comprehensive Introduction to MATLAB - Good Readable or Reference Guide
A MATLAB Primer - written by Kermit Sigmon (PDF file)