How to restore my iphone back to its original settings?

I just plugged in my new iphone 4S into my computer and chose to restore it from the previous backup of my ipod touch 4th gen, well the settings are different and now i can't do as much as i used to be able to do, how can i change it back? Do i have to restore it?

Go to setting, then general, and all the way at the bottom it should say reset. Click that and then hit reset setting