i've tried to change the text so it maybe suits you, and i've also changed the code to the most recent version since i bumped into a few problems while adding the button.
the batteries (if that is interesting) is AA (1.5 Volts), and im currently wondering if i should change the HIGH in if (buttonState == HIGH) to a numeric value.
is it possible to use "smaller/greater than" signs (< >) instead of the two equal signs (==)?
i currently believe that the current is the problem(see what i did there?), thats why i want to know if i can use those signs!