Thank you! :]
Welcome to TRF.
It all depends what you want your character to do. Do you tend to like to play a more neutral role, in something like a corporation, or would you prefer to be in the midst of the fighting, at the helm of a Star Destroyer, or on the ground with a blaster in your hands? Or are you more of a sneaky type, someone who likes to appear legit, but secretly be backing the galaxy's largest criminal/terrorist organization? Or are you the diplomat for the neutral government? Or are you more of a lightsaber swinging, do gooder Jedi or a Force Lightning throwing Sith*? TRF has a wide variety of factions, with many different positions available in all of them. I'm sure no matter which faction you wish to join, they will have a position open for you, in the whatever area you want to be in. And the ideas I suggested here are just the tip of the iceberg that TRF has to offer, there are plenty more options for you. And there is no reason you can't combine some of the different options (say a Galactic Coalition Officer and a Jedi). Or you could go the seperate route of not joining a faction at all.
If you wish to join GC, we would be happy to have you. However, I would like to note that GC just received something like 5 new members in the past 2 weeks and there are plenty of other factions who would be happy to have new members, including TNO (The New Order, i.e. Empire). So maybe we should spread the new members around and stop being so greedy...but I'm a greedy person. So join GC! Anyway, think about what you want to accomplish here at TRF, and pick a character to suit that.