HGE

I need help. I am trying to make a GUI but i want to get used to it first. I am using the tutorials (tutorial 6) and changing settings trying to learn the best i can about the GUI hge offers. what i need to to learn how to make a button that i can put numbers or words on and determine when click (for now do nothing but later do something). I am using the exact code just adding to it. if you can help me out i would greatly appreciate it