Many people feel out of place when dining simply because they don't know how to follow table manners, especially if they have been invited to a nice place. Admittedly, it is difficult to learn every point of etiquette at a glance, but here are a few general pointers. Remember, good manners never go out of style.
If you have a bread plate to the left of your fork, put the bread on it. When the butter is passed to you, use the serving knife to take a pat. Place it on your bread plate. Then pass the butter dish along with the serving knife to the next person. Use your fingers to tear off a bite-size piece of bread. Butter only that bite-sized piece. Then eat and repeat as desired.