"Green Lantern" has finally arrived in theaters, but as many media outlets (including us) have pointed out, there's a good chance that many of the people lining up to see Ryan Reynolds' big-screen debut as Hal Jordan know very little about DC Comics' cosmic police force known as the Green Lantern Corps.

Don't worry if you're a Green Lantern newbie, though, we've got your back. Along with having the "Green Lantern" cast explain their characters, we also put together a quick primer on some of the alien members of the Corps.

Once you check out our "Green Lantern" Alien 101 above, there are a few other places you might want to look to get up to speed on Hal Jordan and the rest of the Corps.

A good place to start your Green Lantern research is our "Green Lantern" Cheat Sheet, which breaks down the long, tumultuous journey DC's ring-wielding hero has taken to the big screen (including a brief period where Jack Black was attached to star in the film).

Since a hero can often be described by the rogues gallery he attracts, why not check out our list of Green Lantern's Great Enemies? You'll see quite a few of them in the film this weekend, so here's a peek at the bigger picture.

Before you watch the movie, make sure you watch our roundup of the Five "Green Lantern" Easter Eggs to look for during the movie. Some of them are hidden, some of them are right out there for you to find — but they're all cool.

Got all that?

Once you're done, make sure to keep it locked to MTV Splash Page all weekend and into next week for more "Green Lantern" movie news and features!

Let us know what you thought of the our "Green Lantern" Alien 101 video and the rest of these features in the comment section or on Twitter! You can also follow me, Splash Page editor Rick Marshall, on Twitter!