Changing stage displays?

Hi all,
I’ve attached a simple example of what I’d like my ideal initial screen to look like (not exact but rather in a nutshell)…
I know I should know this by now, but I don’t:
How do you display the proper page (screen) depending on the button you click? Obviously I need at least one (?) mouse event listener. However, I don’t know how to switch to the corresponding screens. Ie,. click on the play button and it begins the game, click on the instructions and it displays them, etc…
Do I need to place certain texts on different frames?
I’m sorry for such an amateur question but I can’t find an answer in the resources I have available.
Thank you in advance,
Justin