Canon 600D Wheel is Broken

Morning guys. Iam a COMPLETE newb to using my Canon 600D. However the problems with being a newb is when you purchase something you have no idea how to test it.

It appears the scroll wheel in order to change the aperture etc doesnt work. Is there another way I am able to change these. I know its a terrible question. Also poorfully explained, but its all I have. Ha ha.