When you're in a group killing stuff for a quest where you get an automatic update like wolf heads or you're killing a big boss guy why is it only one person (the perosn who hits it last?) gets credit for the kill?
Because that is the way they set up SOLO quests. Whoever gets the last hit is the only one to get the quest item. Not a great setup if you ask me, but there it is.
Go to your's quest list (ALT+U) after each quest name there are 2 picktires, they show types of quests. Put arow above the question make in top right corner of your's quests list and you iwll see what each item stands for.
No, there is no party quests at your's level. The earliest party quests start from lvl 20, as far as i know.