There are lots of ways to learn video game development, the internet is full of free sources and just by doing a simple search on Google would help you find the source you need.

video game development is a very highly specialized job, but with lots of practice and starting of at a lower lever you can work your way up to higher levels. I my self would look into making maps for other games and also playing with graphics, then I would look into program development as these would be needed down the line somewhere.

I learned all I know for different subjects on the internet, I have never been to any course for website coding, SEO, graphics or other things that I do, and leaning video game development would just be the same I am sure it could be done to some level if not all without using any course. If you do decide to go on a course for video game development, try and opt for an online video game development course.