Well, I'm telling you, it wasn't the best idea to skip a year of school
But then, go make friends! Everybody starts out with no one to talk to, and they find tons of people to hang out with. Go to the movies with this friend, hang out with his friends, get out, and have fun. Your young, and you deserve a good time!
What does this do? This helps you gain confidence to make even more friends. And trust me, when you go to college, you'll make more friends than you know to do with. Just trust yourself, and don't be a coward, and you should be fine!