I want to make a small tiny game to where if your press a button some text will occur, music will change, and the main, 2D, image changes. Any idea what to do 
There are tons of tutorials (both video and articles) here: unity3d.com/learn
Once you are familiar with the Editor, you can take a look at how to make a Breakout game, whcih teaches you basic game mechanics and creating user interfaces.