OH, so this was for you to learn how to program a game?
there are many tutorials about it, if you wanna use unity, you'll need a program called "Visual studio code", is free, is for programing, many languajes, like HTML5, CSS, java (web desing), python, C++, there are many code languajes you can search tutorials for,
but if you want to learn to code, I'm not really the guy you're looking for, I know basic things, and I could answer some questions, but I haven't done anythign very complicated.
here's a playlist of tutorials I found when I was studying this, I hope it helps, they're short videos that cover basic things at the beggining.