Usually teenagers easily find friends. But for shy and newcomers is a serious problem. Many teenagers are friends at school, but not all. Because I do not always have the same interests classmates. You can participate in activities that you like and get acquainted with the guys. Common interests - an excellent opportunity for friendship.
Here are some places to find friends sports teams in your school sports classes(karate or ice skating, for example) music classes o art classes theatre groups pen friend clubs.
Just go ahead. Faced with a new person, say hello and introduce yourself. One whom you do not know can be your friend.