Credit Card Discussion

I heard that there’s a credit card with a miles reward, and every use of the credit card you’ll earn points and you can use the points to get a free plane ticket. What kind of credit card is that? I only have a BOA Credit Card, and planning to have another credit card.

credit cards, dr bills, etc.
Do you know of the best palce to get one?
I have BOA right now and a credit card with them - should I stay with them or look somewhere else?
I asked for a credit increase on my current credit card at BOA and they said no.
Should I go somewhere else? Or [...]