How should I setup my book-like game?

Hello,

I would like to realize a book-like or a comic strip-like game, where you can browse pages and for each page there can be a sound, a new music can start (if one is playing) or a small choice to change the story for the player. How do you think should I setup a game like this (obects, classes and scripts, music mixer)? Are there some "design patterns" for Unity that I should respect?