Try being fun and sweet
Get off the Internet and try talking to a girl.
If you are fun and sweet it should be easy. Try not to get in trouble too much, be kind to the girl and maybe throw her a compliment like "I like your necklace" or something. DON'T get in her face or act as if you are stalking or as if you are a magnet and she is iron because girls don't like guys who are in their face. But they do like guys who do not run and hide so try to find a good way to not be shy but not be obnoxious either. Most of all show you care about her and that you support her.