Use a UIButton to add a UITabBarController(and its view) or a UINavigationController(and its view)

Question

Hi, i'm trying to load a simple uiview at the start with 2 buttons.

I would like to do the following:

-Press one of the buttons to go to a Tab bar view(and/or its controller)

-Press another one to go to a navigation view(and/or its controller)

-Also how to go back to the original view from those 2 views(tab bar and navigation)

I know how to implement the tab bar view and navigation view individually.

I just wanna know how to link up all those delegates and controllers, etc.

Thanks.