Here you can find several OSX related tutorials.
Our first tutorial covers AppleScripts.
Dec 12, 2011
A basic introduction of this very powerfull tool. Learn to control almost every OS X features.
Comprehensive 'Compile FFmpeg for OS X' tutorial
Jan 21, 2012
A detailed tutorial to compile a OS X FFmpeg binary.
Basic 'Terminal' tutorial
Feb 26, 2014
A basic tutorial to get going with the Terminal.
Introduction to 'Automator'
Mar 30, 2015
How does Automator work in three simple steps.