Learn - OS X El Capitan Core Concepts Edition screenshots

It is a video training application that lets you get the most out of your Mac.
Learn - OS X El Capitan Core Concepts Edition 1.0 : Main Window
Learn - OS X El Capitan Core Concepts Edition 1.0 : Main Window

Alternative downloads

VolumeMixer
rating

Volume Mixer is a free-to-use app that allows you to control your Mac volume.

MacX QuickTime Video Converter
Free
rating

It helps you convert all types of video files into QuickTime-compatible formats.

Kick-Start Videos
Free
rating

Teach yourself how to use Toon Boom Digital Pro by following this videos