How do you eat a burger as per eating etiquette?
A hamburger is a sandwich and as such you should eat it with your hands. The rules of ettiquet are for more formal settings where your food is not delivered in a paper bag. If you want to display some sense of manners then I would suggest having a napkin nearby to remove any special sauce that goes astray. If the tomato falls off and hits the ground, then you should not eat it but if it is a fry then the three second rule applies.
