I really don't know how to talk to guys...help?

Hi, I am 19 years old and have steadily been gaining some self confidence over the last couple of months. I don't really feel as ugly as I used to anymore but I don't have a lot of friends, actually I barely have any. I don't really know how to talk to people, or approach them. I feel like I annoy them whenever I try, or that they have no interest in talking with someone like me. I don't really know how to get past this insecurity. Especially when it comes to the opposite . I'd really like to develop a relationship this year, I know it's commmon and all but honestly, I've only ever had one boyfriend and to me that just seems strange, especially when all my friends continually say I'm not ugly, which leads me to believe there is something else wrong. I know I am terribly shy but I'm trying to fix that, I just don't know how to talk to people. Anyone think they can help? Thank you, I really appreciate your time.