Android 2D Game Development Tutorial??

hi, i am new to unity and programming. i am wanting to learn how to use unity and want to start out by making a simple 2d game for Android/iPhone(whichever is easier). anyone know of a good tutorial that i can follow, even one that is a full game step by step. thanks for reading! P.S, i have the pro version of unity with android/iphone license i am also running windows 7 32bit