If you hit a tee shot into the woods and suspect that it's lost or out of bounds, the Rules of Golf allow you to play a second, or "provisional," ball. From the time you reach the spot where you suspect your first ball landed, you have five minutes to find it. If the ball's not found within that five-minute period, you must declare it lost and play your provisional ball with a one-stroke penalty
For safety's sake, never hit when there's a chance you might be able to reach the group ahead of you. Anytime you hit a shot that has even a remote chance of hitting a player, yell "fore" immediately.
Displays of frustration are one thing, but outbursts of temper are quite another. Yelling, screaming, throwing clubs, or otherwise making a fool of yourself are unacceptable and, in some cases, dangerous to yourself and others
Finally, at the end of the round, shake hands with your fellow players, congratulate the winners, console the losers, and thank them for their company. At the end of the day, the great pleasure of the game of golf is the time you get to spend with your friends.