Teenagers can find girlfriends in their schools, colleges or on summer jobs. The only requisite for having a girlfriend during one's adolescence is a good level of comfort and a sense of humor (though pocket money always helps). As one grows up, the process of finding girlfriends is influenced more by profession, lifestyle and financial status. Having a girlfriend at the workplace is usually a strict no-no. Therefore, there are various parties held for the sole purpose of finding a girlfriend or boyfriend; there are also many singles bars, where many relationships begin over a drink.
When meeting women at such a singles bar or party, one should remember that the first impression is really the last impression. At that point, the chance of a future relationship hinges entirely on that first impression and the conversation of the evening. One of the best tips anyone can give one about evoking a good a first impression is to try and put out what one really is or, simply put, "Be Yourself". Trying to impress a woman by not being oneself always yields hilarious repercussions (or the makings a blockbuster romantic comedy.)
There is also a host of friend-finding sites on the Internet today, which promise much for a small fee. Though there is no proof that these sites work, there is plenty of empirical evidence to support giving them a try. Make sure they are reputable, because online love can be hit-and-miss. Try a few different services to find out which suits you best.
Another method of finding girlfriends is simply making them, rather than taking pains to find them. Perhaps an old college friend is your romantic sole mate. Keep your options open. Keep in touch with your childhood friends. One never knows which plain Jane has changed into a femme fatale, or which geeky friend has today become the woman one is most comfortable with.