You need to slow down. Programming is something that takes time and patience. Don't expect to program a video game with 4GB of content by yourself and without at least 2 years of practice and learning.
Start by learning the basics. Python or Java are good languages that can teach you the basics and are powerful in their own right. At some point you'll need to learn C and C++. Learn C first because all C code is valid C++ code.
Once you learn the basics start learning about data structures, functional programming, threads, algorithms, and other higher concepts. Programming is not easy and it can be time consuming. And keep in mind that the "fun" stuff in a video game is doing things like art and music. Programming can be fun if you love math and problem solving. And if you're going to program games you will be using concepts from math! If you're going to make a modern game then you will need to model things like physics!
I'm not trying to discourage you, friend. I'm only being realistic. In Greek mythology there is a figure named Icarus who was imprisoned on the island of Crete. He was given wings made of wax by his father, Daedelus, a master craftman. His father warned him not to fly too close to the sun because the wings would melt and not to fly too close to the ocean because the water would clog the wings. Icarus ended up flying too close to the sun and falling into the sea.
Having high ambition is a good thing but its much better to break up your one big goal into smaller goals. I'm 27 years old. It took me many years to learn this lesson.
Using a search engine look up free programming books. Wikibooks also has many books on programming. Its a good place to start. Best of luck to you.