Don't worry about not having many friends, i used to be like that the beggining of last year, but since i've went to sixth form i've made lots of friends but in my other school i didn't well a had a few but not that many. When i was in my old school i lost all hope, because i thought that people in my old school represented what most people are like but i was wrong, it was just a bad bunch of people.
My advice is just be yourself, and if they don't like you then don't worry, you don't need them. Anyway, i guess this is what forums are for everyone is nice to each other and most of us get along quite well.