Software
Unity game engine:
Unity website
Download Unity game engine
Asset Store (free assets available too)
Unity guides, manuals, and wiki:
Unity User Guide
Unity Wiki
Unity programming\scripting:
Unity Scripting Tutorials (official)
Newbie guide to Unity Javascript
Unity assets and guides for CSCI 1030:
Unity Quick Reference guide
SLU CS Assets for Unity 5.6 (directions for using these assets)
Audacity sound/music editor:
Audacity (at SourceForge)
Converting AAC files to MP3 files in iTunes
Blender graphics tools:
Blender website
Download Blender
Blender Cheat Sheet (from Blender Guru)
Another Blender cheat sheet
Blender 3D: Noob to Pro (excellent online wiki; Units 1 and 2A especially relevant)
Video: "UV Mapping in 3 Minutes"
More Advanced Topics on Using Blender with Unity:
Exporting from Blender to Unity by Mat-D (more detailed exporting)
Tutorial on advanced texturing in Blender for Unity (more advanced texturing)
Autodesk FBX Converter (for adding textures into .fbx file)