On a more serious note...;)

If I were you and if you are using C-script (I am not sure if it is different for Lite-C, I am not a user of that yet) I would read up on these things in the manual, and just practice around with them:

Panels, Texts, Buttons, etc.

Just get used to using them and then once you know the basic parts just plan out a simple menu from there. They can require some planning when you want to achieve a visually good and complex menu.

Hope it helps,
Adoado.