Very quick explantion. Par is what the course rates as the score that you should get on any given hole. Example, if the par for the hole is five and you get the ball into the cup in 5 strokes, that is par. If you sink the ball in 4 strokes, that is a "birdie" and if it only takes you 3 strokes that is an "eagle" - 2 under par for the hole. It's really quite simple to understand, but hard to do.
