Go in dressed up all fine, with dark glasses and a seeing eye dog. And a wingman. Dance with girls and let them pet your seeing eye dog. This will trick them into being interested in you, hopefully. Or, go to the same bar all the time and make friends with the owners so that everyone likes you there. Or, say "Did it hurt? When you fell from heaven." Or, my best advice yet: go to blockbuster, rent and watch "How I met you mother" season one disk by disk, do everything that the character Barney says.
There is no easy way to pick up chicks in a bar. But there are signs you can watch for that will significantly improve your odds. First whats the guy girl ratio for that bar, if its not more girls than guys its a waste of time. Second watch for eye contact or other body laguage signs that suggest interest. EX. playing with hair, smiling (watch the facial movments in the smile does the nose crinkle or the forhead wrinkle if not its a false smile). Third after your engaged in conversation dont be a jackA act interested even if your not (you probably wont be). Finally she will make the move look for any kind of body contact (any kind at all will work) it could only be brushing against you but it means shes very interested and this is your invitation for more. And finaly DONT RUSH! Women are exedingly more complicated than men and when you push to fast your going to get rejected everytime. These are just some general guidelines ive picked up over the years and ive never failed. You just have to feel your way around the situations cause no two are alike. Once you have the basic understanding then you can refine your own personal style and women will be attracted to this. Good luck amigo and happy hunting.
First get in a conversation with someone you know and while your talking every once in a while look at her and then she will know your interested in her. Then she will look at you and then go over and buy her a drink. Then complement her by saying something original like " as soon as I saw you I knew you were as beautiful as the sun setting in the sky." Then if she has a shimmering look in her eye when you say it she likes you. If she doesn't then ask her what hobbies are. If she does and says something on the complement ask her if she would like to go on a date.