BBC Code List and
Character Sheet Templates1) As long as you make it clear which skills are Racial Bonus, which are from the Starting Package and which have been won from threads, you can code it any way you want, so there isn't a specific code for your skill list.
2) You could do a general outline of your history and flesh it out with flashbacks. I'm not sure if the history is actually required, but I've seen mods asking for it, so I guess it's at least helpful to have it.
3) What exactly about the starting package you need help with? As for the skills:
You have 50 skill points that you can put on any skill or magic you want. The minimum for starting skills is 5 points and the max, 30 points. Besides those 50, you have the racial bonus. In your case, since you're a mixed blood, you can put 10 points in any skill you want (it has to be on a single one, though, and the total of points on that skill still can't go over 30).
You gain skills by roleplaying them in threads. If you fight someone with a dagger, you would get skills for Weapon: Dagger. They have to be awarded by a ST, though, before you can add them to you CS.
EDIT:
Character Sheet Q&A This thread is also very helpful.