Went though a rough break up, ready for a new gir. Help?

So I got dumped two months ago after a 13month relationship and I'm really in the dumps, ready to move on and think its time for a new girl but have no idea whereto start. I'm a freshman in high school I'm fairly athleic lettered in cross country and track I'm and alright looking guy buy I'm very very shy and I don't have a lot of friends. Just need some help.