It sounds as if you're new to this world. Hi! I'm Cassidy Turner. I grew up in this place. You've been magically transported via Vortex from your home reality into this one. Here's a rather sparkly [website] which explains it all in detail, but if you want, you can ask me anything.
And as a university student, I'd like to say that most of us also realize that our video game addictions are to blame for our failing grades. It's why during midterms and finals, I make my wife hide the bloody consoles.