Green Lantern

[AronofskyFan]

I am 26 and new to comics, parents thought they were a bit lewd when I was younger but I recently decided to dive in so I could see where all these great movies and tv shows originated from. I am sad I haven't been reading comics longer and I am officially hooked. I have been a fan of super heroes since I was little, my favorites were always Batman and Green Lantern. I feel like I have a pretty good grip on the Batman classics, I have read Year One, Hush, The Killing Joke, the first two of the new Rebirth, and almost finished The Dark Knight Returns. But I am not sure where to begin with Green Lantern. I have read the first five issues of the Green Lanterns Rebirth and the first four of the Hal Jordan and the Green Lantern Corps Rebirth and am loving both so far. But to dive into the history of the Corps more, where should I begin? I know Geoff Johns entire run is very highly thought of. What books are mandatory reading from a greatness, and a historical, perspective? Thanks ahead of time for the answers