Octave Programming Language
I work a lot with Octave and figured there maybe a few others who also work with it. Some of you may use Matlab, but I wanted build the case for using the free Octave programming languages even with the slight differences. Below are some great manuals and tutorials of interest among other things.
http://krchowdhary.com/research-meth...matlab-tut.pdf
Octave Programming Tutorial - Wikibooks, open books for an open world
http://www-mdp.eng.cam.ac.uk/web/CD/.../octavetut.pdf