Put your camera in "P" mode. It's a semi-manual mode that allows you to change the setting you want, while having everything else automatic. Adjust your /f and take some practice shots. See what your camera selects when in different lighting situations and go from there. After you get that down, start playing with your ISO levels. Higher ISO means you can take pictures in lower light but it also means your pictures are prone to grain, and vise versa.
Even though you're a dick to me in the motorsports forums, I'll still help you out with any photography questions you have. Just PM me.