In the year 1940 the first super hero was born when Superman had been created. He became a huge star, especially among children and his persona made billions of dollars over the course of many years. With the superhero model now set, various artists set out to create new superheroes, which eventually led to the creation of Batman, one of the most fascinating superheroes, not to mention one of the most popular ones.
To make a long story short, the history of Batman is basically that of a young boy named Bruce Wayne belonging to a rich family whose parents were murdered during a mugging in front of his eyes. The only things the young Bruce still had left where his enormous inheritance and a loyal and caring butler in Alfred. Throughout the years Bruce Wayne has grown to become one of the most proficient people in just about anything, mastering not only various martial arts, but also investigative techniques and just about any topic they teach you about at university; he was a genius and a wrecking machine.
At one point, Bruce, being obscenely rich and allegedly bored out of his mind, decided that it was time to rid the city of Gotham from the criminal parasite which seems to have rotten this city to the core. After considering his options, and possibly having a debate with Alfred about his image choice, Bruce Wayne decided that he would don a costume themed after bats, and naturally he would be called the Batman. At his disposal is an arsenal of various custom-made batarangs (sort of like boomerangs, but modeled after a bat), grappling hooks, bombs, and various other accessories… all themed after bats of course.
Throughout his never-ending crusade against the forces of evil, Batman encounters countless deranged maniacs and murderous psychopaths all of whom plot to either take control or simply destroy the city of Gotham, a place where daily terror attacks against innocent civilians is something of a given. Some of his most renowned enemies include the now worldwide famous Joker, the seemingly invincible Bane, the bizarrely seductive Poison Ivy, and Scarecrow who is incredibly close to coming off as a shady drug dealer hanging around schoolyards. It seems that every time Batman takes down some eccentric megalomaniac plotting to destroy his city, another takes his place in the blink of an eye.
If you would like to get a more detailed account of the history of Batman, then the best source for you to check out would be the Batman comic books. Keep in mind that Batman comic books are where the creation of Batman basically occurred, meaning that if what you are looking for is some original material on how Bruce Wayne went through countless murderous trials before he was ready to become Batman, then comic books are where you should be looking. Batman is luckily an extremely famous character, and any comic book shop that doesn't Batman issues should be ashamed of itself.