so I'm trying to make this gaming storybook. like a visual novel or so. Kind of like a rpg. but I really don't know how to start and was wondering anyone can help me?  

my idea is kinda like there a boy and he is destined to save the princess and he goes through different games/fandoms like pokemon or harry potter etc. and then face different people in the book and depending on he choice he ends up dying or continuing the game. and in the he he finals finds the princess. 

so help please?