I have never had a credit card, and I don't know what my credit score is. What's the best credit card I can get?
That depends. Assuming you're gainfully employed, but you're young and don't have a long history of credit -- you don't own a house and haven't paid off a car -- then your best bet is to look for a credit card that is aimed at people with a limited credit history.
If you are older and [...]