what kid of knolge do i need for game designing

Another school that specializes in game design and game art is Full Sail University in Florida, which is closer to you.

However, I have to be direct and honest with you here -- if the spelling, grammar, and level of writing in your question is typical, you have a lot of work to do before anyone at a game company would take you seriously. You don't come across as someone who is well educated.

There's multiple answers to this depending on what area of game development/design you're interested in. I would not recommend this school, but you might want to look at Full Sail University since they have tracks in both graphic design for games as well (which is what I'm sensing you're leaning towards) as game development (meaning using computer code to create games). To save you a bit of time, here's a sample of the lower level classes from their Game Art Bachelor's degree class title list:

Creative Presentation

Psychology of Play

Technology in the Entertainment and Media Industries

English Composition I

3-D Foundations

Fundamentals of Art I

Model Creation

Fundamentals of Art II

Shading and Lighting

2-D Animation

Project and Portfolio I: 3-D Arts

Career Module I: Personal Branding

3-D Animation

Art History

Project and Portfolio II: 3-D Arts

Career Module II: Career Research

You might also want to check out Scratch to see if game development is something you're interested in. Scratch is simplistic looking, but you can do some pretty complicated programming in Scratch.

Either pathway though: game development and the graphic design are going to require you to learn to use and understand programming languages to some extent. So you might want to look to see if your school or local library has an account to sites like Team Treehouse, Lynda, Udemy, or other online sites that you can learn how to code from. Of the list, I'd personally recommend Team Treehouse as they start at the absolute basics and work up from there.

I hope this helps some.