First of all, welcome to the community and game and i hope you enjoy yourself.
Now for the question... i do something like this:
1) pick the faction ID
2) male/female
3) general personality. Evil, caring, adventurous
4) what do you wana do with him?
5) what does he fly? What ship? what is his job?
6) character. like more in depth than the general personality
and i guess pick how he/she looks like aannddd... i dunno depends how far you want to take this. you can go as far as writing about the character or as little as just role playing in game.
I would suggest for a beginner just make an average joe guy in space and practice talking to people and submerging into the game. it is all about getting a feel for the atmosphere and what your guy would do in a situation.