Hello phunnygirl99. Welcome to Android Forums. I see that you made your way to the S4 area. That's great! You will find all sorts of information there about your phone and the mods you might consider. I hope you enjoy your time here and we certainly are happy to see you as a new member.
Welcome to the forums We have some useful FAQ's regarding what rooting actually means. Feel free to check them out: http://androidforums.com/faqs/443432-what-root-being-rooted-mean.html