where do I begin?

Question

I told my classmates that I wanted to start my own video game creation company, but they just beat me and called me an idiot.

Answer 1

Make your dream come true, beginning with this wonderful game development tutorial by Happy To Help.
https://code.sololearn.com/WvIsS7qN8npX/?ref=app

Answer 2

You might start with some project using some game development software.