Another great one is 'Watchmen'. It's a complex and thought - provoking graphic novel. It deconstructs the superhero concept, with a multi - layered plot and morally ambiguous characters.
First, you can make a list of the ones you're most interested in. For example, if you love Superman, look for his related DC Essentials Graphic Novels. Then, check local comic book stores. They often have a good selection.
Well, in 'dc comics essentials graphic novel', stories that deal with the Justice League's first encounters and team - building can be great reads. They show how different heroes with unique powers come together. Also, the tales of villains like the Joker can be really interesting as they add depth to the overall DC universe.
As of now, the current Flash is usually considered to be Barry Allen. But the DC Comics universe is complex, and there could be alternate versions or storylines that feature other characters as the Flash temporarily.