Looking for tutorial

Hi

Thank-you for reading

I’m looking for a tutorial for a 2d style game, I have read many of the 2d tutorials but they are not for the style of the game I’m looking to design.

The game is a similar to “Badgirl Prom night”

Screenshot:

The game is a simple background image with three choices for the player to choose from, which depending on the players answer takes the player to another image with three more choices.

Could anyone tell me where I can find a tutorial for developing this kind of game in Unity3d ?

and is it possible to create an iPhone game using windows then copy the finished project folder to a Mac for publishing ?

Thankyou

Anyone know? thanks