"Is morality something we learned to help society achieve it's collective goals?" In answering this question think about the Holocaust and Hitler(murder of the Jews wasn't considered "wrong" in there society during that time.)
"Is morality universal or relative; objective or subjective?" Yes, everyone in general agrees that murder, stealing, lying, adultery and other sins are wrong(Conscience tells us). Hence biblical doctrine!
Consider this too!:
The bad news: We all have sinned (violated God's law) and fall short to the glory of God (Romans 3:23). God can not tolerate sin and will punish for it because of his holiness and justice (Isaiah 13:11). Which means that there is no one who is good, but God alone, and the wages of sin is death(Hell). (Romans 3:10-18, Romans 6:23)
The good news: The good news is that God loved us so much that he sent his son to take the punishment for our sins, so who that whoever believes in him should not go to hell but have everlasting life (John 3:16). All you need to is repent from your sins and place your faith in Jesus Christ. The moment you do that you will be forgiven from your sins and know and will be granted everlasting life into heaven. (Romans 10:13)
Please think about this! You can die at any moment and youth is no guarantee of a long life!