Don't Understand

i still don’t understand how you create the game.
*What file or website do i need to save my codes on

Go to here: https://www.choiceofgames.com/make-your-own-games/choicescript-intro/
Click the link that says ‘download the ChoiceScript source’, and save the file on your computer. There’s a bunch of files and folders, but the actual code you write is in web\mygame\scenes, in .txt files. Go up one level and you can click the ‘index’ html to test the codes.

My guide here breaks down everything step by step, from downloading, to starting to make your game.