Raw beginner stuff:

http://unity3d.com/learn/tutorials/modules/beginner/editor/interface-overview
http://unity3d.com/learn/tutorials/modules/beginner/editor/the-scene-view
http://unity3d.com/learn/tutorials/modules/beginner/editor/the-game-view
http://unity3d.com/learn/tutorials/modules/beginner/editor/the-hierarchy-and-parent-child-relationships
http://unity3d.com/learn/tutorials/modules/beginner/editor/project-panel-and-importing
http://unity3d.com/learn/tutorials/modules/beginner/editor/the-inspector
http://unity3d.com/learn/tutorials/modules/beginner/editor/game-objects-and-components
http://unity3d.com/learn/tutorials/modules/beginner/editor/tags
http://unity3d.com/learn/tutorials/modules/beginner/editor/prefabs-concept-usage
http://unity3d.com/learn/tutorials/modules/beginner/editor/build-player-settings

2D game development
http://unity3d.com/learn/tutorials/modules/beginner/2d/2d-overview


scripting
http://unity3d.com/learn/tutorials/modules/beginner/scripting/scripts-as-behaviour-components

ACTUAL EXAMPLES -- do these
Space Shooter: http://unity3d.com/learn/tutorials/projects/space-shooter

2D Catch game demo
http://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/2d-catch-game-pt1