More Unity resources

A few 2D tutorials

http://www.raywenderlich.com/61532/unity-2d-tutorial-getting-started
http://pixelnest.io/tutorials/2d-game-unity/
http://www.youtube.com/watch?v=yQXdREL4GGg
http://unity3d.com/learn/tutorials/modules/beginner/2d/2d-controllers
Official Unity 2D overview video + project file

 

Some example projects

Some very simple example games
Some example games, and some generally useful scripts (a bit messy, some stuff needs to be adapted for new 2D engine)