How is it possible for me to get friends?

I'm sorry to bore you with part of my life story and all but you kinda need to know a little bit about me in order to answer the question so here goes...i'm a 15 year old boy and i've been alone for awhile now although i do have 2 really close friends but thats it.The kids on my nieghborhood i either don't like them or there not my age so my only real hope is to make friends at school and as for hobbies i have none really except 4 playing guitar,and playing video games...personality wise i'm calm,sensitive,and some people tell me i'm funny.So basically i have everything i need to make friends with someone it's just that i don't know how to actually put myself out there because i'm afraid of being judged.How can i get past this fear so i can somehow make friends?I've been like this my whole life and i absolutely refuse 2 keep going like this.any help will be greatly appreciated and thank you in advance...P.S I'm not in any clubs or school groups or whatever and i don't plan on going to one,so i can't find friends that way if thats what you were thinking