GUI Button Press?

Hi I’ve got this game I’m making and I’m trying to show when a button is pressed on the GUI panel but I’m a beginner and I don’t know what to do. Help? Do I need some sort of script or something?! Thanks

Can you explain, what do you want to show, when the button is pressed?
Do you use new UI to create a button?
If yes, you have to create a script with public method and set it in the button’s settings in the inspector: