I think most people who get a lot of dates just tend to regularly ask people they meet, and people who don't get any don't tend to ask anyone. The first thing to do is to start asking people out if you're interested in them. It's not actually that difficult - get to know each other a little, then if you like them suggest doing something fun sometime you want to do. Talking to girls is like anything else - the more you do it the more comfortable and natural you get at it.