在标签栏控制器中实现表视图？

I'm starting out with learning Table Views. My applications uses a Tab Bar Controller and all the tabs are simple views. I want to add another tab, and in this tab I'm trying to implement a Table style navigation controller. From what i'm reading these views need a UINavigation Controller as the Root View Controller however my tab bar controller is already set a my Root View Controller, so i'm kinda confused.I'm starting out with learning Table Views. My