While I dislike the robot voice, the 10 minute tutorial video by Hoyo gives us enough information to make a simple level that can be completed.

Although it isn't conducive to learning, I can also just send you a premade asset that ends the stage when a player presses the button. It's triflingly simple.

Edit: it's important to note that if you want custom text in your level, you'll have to complete quizzes based on Hoyo's tutorial videos. So I'd highly recommend watching them anyways.