If you are into "hard" martial art styles, you may want to check out these sites:
                        Karate
                        Tae kwon do
                        Tai boxing

    If you are into "soft" martial art styles, you can visit these sites:
                        Tai Chi Chuan
                        Shaolin Kung-Fu
                        Wing Chun Kung-fu
                        Yang's Martial Arts Association