You know one which actually has a story and shows of the techniques all in one place in something that runs a bit longer and shows of a few advanced techniques like how some game have dynamic relationships that only appear after you have met the character in question.
You can look at any of the published games’ code for inspiration. Admittedly only the free chapters, but I believe that’ll be more than enough to get you going. Here, knock yourself out: https://www.choiceofgames.com/werewolves-haven-rising/scenes/startup.txt
Just replace startup.txt with the other scene names as they appear in the scene list.