I'm here because of iZombie. Huh.
Welcome to RPoL, Jenesis!
As has already been discussed, yeah, girls do, too, play D&D. Shoot, they even run games that can be very engaging (my wife has the gift - she's actually a better GM than I am by a country mile. O'course, that wouldn't take much. It's a pity she doesn't play here -- that I know of...)
Let me point you at some places that may interest you:
Community Chat is a forum for light-hearted innocuous getting to know you chit-chat. Hang out and copy the traffic some, then, when you're comfortable, post. Get in on the conversations, and be you.
Wanted - Players is the place where Game Masters (GM) advertise their already existing games in search of players for same.
Wanted - GMs is sort of the converse of the previous forum. Players advertise here for a GM to run a game for their enjoyment.
Both of the Wanted - boards have some special features and terms of use, so be sure to look at the Notices while you're there. Notices are stickied topics that have useful info about what goes on in a particular forum. (It's a good idea to read Notices first thing on visiting somewhere.)
The Game Search tool on the main menu (about two-thirds of the way down the page) is useful for finding existing games on the site that might interest you. There are lots of filters to help narrow your search in some very useful ways.
If you get the yen to run a game or three of your own, RPoL has some of the best game construction and maintenance tools around - you can use private groups to set up a simulated radio or computer network, or just to simulate players and NPCs that speak different languages, just to mention one. A lot of this is covered pretty well in the Help and FAQs, and is worth a look.
There are lots of other places on the site that may eventually interest you, but take it slowly. Go at your own pace, and don't let it overwhelm you.
Dungeons & Dragons is only one of the many different sorts of games played here: anything from medieval fantasy to modern era or post-modern science fiction and many, many more genres and systems are played here. You should be able to find any number of things that may interest you once you've been here a while. There may even be an iZombie game somewhere - zombie is spoken here.
If you've got questions, by all means please ask. Plenty of friendly folks will be willing to help you get started. Let's Play!