Tutorial Request: StartPage and Tab bar app without Interface Builder

[pm7]

HI there,

Might it be possible for yous, iphone kings, to propose a tutorial for beginners:
a simple app structure with a startpage on which you click (presentation page) to access to the app which is a tab bar app with 3 viewcontrollers in it.
For each viewcontroller, it would be fine to have some line of code for
-changing the color of the background,
-write some text
-add an image view.

Many thanks for your help.

I'm asking this because I tried to create this structure with the Xcode:
I'm spending days to understand how to access the secondviewcontroller's view.

In fact, Xcode creates (using tab bar app scheme) an appdelegate and a firstviewcontroller. It also creates a mainwindow and a secondview that you can modify via IB. But in the code, I'm still not able to understand if I have to add a view to the firstview controller, how to access to the second view, how to add an item (by default, two are present).
Therefore, I'd like to control all that via code without using IB.

Many thanks if somebody can do that (I guess that the xcode project might be enough for everyone interested in. I'm not sure whether a vid is necessary, even if I'd like it!)

PM