Create Instruction screen

How do I make a screen at the beginning of my game showing instructions?

Create a scene and use a mix of GUITexts and GUITextures. Or use the OnGUI function to place your GUI on the screen. When the user clicks on the “play game” button then call Application.LoadLevel (http://unity3d.com/support/documentation/ScriptReference/Application.LoadLevel.html) to load the scene that your game currently starts with.