I was just wondering how exactly it works when there are multiple comic book series following the same character. For example I was just on wikipedia reading about Batman, and it says that Batman, Batman: The Dark Knight, Batman and Robin, Batman Inc. and Superman/Batman are all ongoing right now. And I know there have been times, like Spider-Man's Back in Black storyline, where one storyline will cross between all of the series. So how does this work? Are the different story arcs just going on one at a time, or is each one in a different continuity or something else?If I want to fully follow a certain hero(ine) will I need to read all of the series to get the full effect?