Welcome to SWRP:Chaos, and I really hope you like it here and stay for a long time.
To answer your question about factions, the same question I had when I started, you can head over to the
factions page and click on any major or minor factions that you like, and simply press the "Join" button to join. If you're looking to be an edgy sith, the One Sith, New Order, and other minor factions are excellent choices, while the Omega Protectoriate(Did I spell that right?) are sort of like the police force from what I've seen in-character. Of course there is also the Republic and the Jedi Council and such, if you're interested in doing good things and stuff. You don't really need to roleplay with those factions before you join, and can join as you please, and my only suggestion with that is that you make a quick intro topic in the IC discussion board that fits your character. (NFU means Non-Force User, FU means Force User, as I am aware that there are separate IC boards specifically for the two.)
Ah yes, characters. While you can create a subaccount by going to your profile page and either clicking the Characters button or Edit Profile and then navigating to Characters/Subaccounts, you can also use your writer account as your character if you don't feel it necessary. (Or in my case where I couldn't figure out how to make one until after I had already made my profile and character sheet.)
If you have any other questions, feel free to ask, either via reply or through a PM, I'd be happy to help you out.
[member="Matteus"]