Open Source Software
From TSAS Library
3D Modeling
Blender It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing and game creation.
Sculptris from the makers of ZBrush, but free!
Video Creation
(See Blender, above!)
Music Creation
Audacity the one and only.
Game Development
LibGDX desktop/Android/BlackBerry/iOS/HTML5 Java game development framework
(See Blender, above!)
Coding
Reading
Research
ZotFile vital add-on for Dropbox integration