Some of the Matlab links available online:

•    Matlab Help Desk    Possibly, this site alone will solve all your problems about Matlab.    You  can as well go directly to the   Online Manuals . You will find a lot of  manuals in this  site, however please do not print them (at least not in the departmental facilities!) . They are big! files and this often causes problems. Also remember the trees! Some of the manuals  are available in rm.625.
•    MathWorks Inc.    is the company that makes this product.
•    mathtools.net     is a scientific portal for MATLAB/MIDEVA m-files and toolboxes, and Excel/Java/Fortran/C++ resources and links.    mathtools.com    has complementary products for MATLAB, like MIDEVA(fast MATLAB replacement), MATCOM (Compiler for MATLAB), Visual MATCOM(integrate m-files into Visual C++) and others, all available for download.
•    Some more   Matlab Help .
•    The Matlab Primer  (3rd Edition) is a 36 page Postscript document by Kermit Sigmon.
•    Answers to Common Questions about Matlab